Have you ever thought how fast can one earn a sum to buy a mansion? For some it’s a matter of hours.

Some high profiled celebrities even earn money when they are sleeping. Literally.

Here’s the top 10 list by our beloved money-counter Forbes.

Cate Blanchett

The actress is better known for her acting skills than her box office draw. She has been nominated for five Oscars. But she stumbled in the list with her 2003 movie The Missing, which earned only $38 million in worldwide box office but cost approximately $65 million to produce. For every dollar Blanchett was paid, the film lost $2.94. She did better with Babel, in which she played Brad Pitt’s injured wife. The film grossed $135 million worldwide, $13.20 for every dollar Blanchett earned.

For every dollar she was paid, Cate Blanchett’s movies averaged $4.97 of gross income.

Nicole Kidman

Kidman has an Oscar and earns $15 million paydays, but she’s proved to offer a poor return on investment. Despite bringing in $370 million in worldwide box office, The Golden Compass only grossed $3.36 for every dollar Kidman was paid. The Invasion lost $2.68 for every dollar that went to Kidman. She has a chance for a high-profile comeback with this fall’s epic Australia, which could earn the Aussie her third best actress nomination.

For every dollar she was paid, Nicole Kidman’s movies averaged $1 of gross income.

Jennifer Garner

Garner has stayed fairly under the radar since her 2005 big-budget disaster Elektra, which cost $40 million to make and earned only $56 million worldwide. Unfortunately for Garner her follow-up films didn’t do much better. Both Catch and Release and The Kingdom underperformed at the box office.

For every dollar she was paid, Jennifer Garner’s movies averaged $3.60 of gross income.

Tom Cruise

His recent cameo as a foul-mouthed studio exec in Tropic Thunder is earning raves and might usher in the era of Tom Cruise comedies. In the meantime, Cruise has to deal with the fallout from his recent dramatic blunder, Lions for Lambs. The film’s box office ($63 million worldwide) was bad enough that even without taking any upfront pay Cruise still earned the movie only $1.88 for every dollar he was paid.

For every dollar he was paid, Tom Cruise’s movies averaged $4 of gross income.

Cameron Diaz

The highest paid actress in Hollywood, Diaz pulled in $50 million last year. But her high salary makes it hard for the romantic comedies she stars in to earn a good return. The Holiday brought in $205 million worldwide but Diaz’s high payday meant the film only grossed $3.70 for every dollar Diaz was paid.

For every dollar she was paid, Cameron Diaz’s movies averaged $4 of gross income.

Jennifer Lopez

The singer/actress/designer has struggled at the box office for the past few years, choosing small projects like 2006’s El Cantante, a low-budget musical biopic starring her husband Marc Anthony, which barely registered at the box office. Her last big film was 2005’s Monster-in-Law, which grossed $155 million worldwide returning $6.85 for every dollar J Lo was paid.

For every dollar she was paid, Jennifer Lopez’s movies averaged $4.10 of gross income.

Jim Carrey

Long gone are the days when Carrey could attract crowds with his talking backside. The actor’s latest attempt at a serious film, last year’s The Number 23, flopped at the box office, earning only $77 million worldwide. Carrey has a chance to turn things around with this winter’s Yes Man. Carrey has so much faith in the comedy that he reportedly took no money upfront for his starring performance.

For every dollar he was paid, Jim Carrey’s movies averaged $4.11 of gross income.

Nicolas Cage

2007 was a year of highs and lows for Nicolas Cage. Book of Secrets, the sequel to Cage’s 2004 hit National Treasure, grossed $456 million worldwide. The sci-fi thriller Next, released that spring, brought in only $73 million. The movie lost 50 cents for every dollar Cage was paid.

For every dollar he was paid, Nicolas Cage’s movies averaged $4.16 of gross income.

Drew Barrymore

Barrymore has been unlucky at the box office recently despite the title of her last film: Lucky You. The movie grossed a mere $8 million in worldwide box office, which means it lost 17 cents for every dollar Barrymore was paid. Maybe that’s why she’s taking a bigger role behind the camera. She’s currently directing her first film, Whip It!, about a female roller derby league.

For every dollar she was paid, Drew Barrymore’s movies averaged $4.38 of gross income.

Will Ferrell

The former Saturday Night Live star did well with high-grossing comedies like Blades of Glory. The sports tale grossed $4.95 for every dollar Ferrell was paid. But he stumbled with his more serious turn in 2006’s Stranger Than Fiction, which grossed $53 million in worldwide box office, only $1.63 for every dollar Ferrell was paid.

For every dollar he was paid, Will Ferrell’s movies averaged $4.67 of gross income.

Now, that’s with Hollywood. Let’s talk some serious talk right here.

Bill Gates

Bill Gates makes so much money from sales of computer operating systems that he wouldn’t have to think twice about upgrading his PC.

Even Windows Vista Ultimate, which has a list price of $319.95, would require the equivalent of about 2.4 seconds’ worth of earnings for the world’s richest man, who is estimated to be worth about $59 billion.

Someone who makes a living helping people cope with computer operating systems would need a lot more time to earn enough to buy the priciest version of Windows Vista. It would take a typical computer-support specialist about 14.7 hours to earn enough.

Here you go!

Have a wonderful day, people!

Indiana Jones and the Kingdom of the Crystal Skull is Steven Spielberg’s 4th Indiana Jones film. It was running out of competition at the 61st edition of The Cannes International Film Festival, On May, 18th in Cannes, France.

Harrison Ford, who returns to the role of Dr Jones 19-years on from the last movie, insisted he was not concerned about the critical reaction to his latest adventure, saying the only people who mattered were the fans. He said:

I expect to have the whip turned on me. It is not unusual for something that is popular to be disdained by some people and I fully expect it. I’m not really worried about it. I work for the people who pay to get in - they are my customers. My focus is on providing the best experience I can for those people.”

Yes sure, because the critics say the movie wasn’t as brilliant as expected.

But the crowd cheered those involved in the film, including Cate Blanchett, Shia LaBeouf, Ray Winstone, Karen Allen, George Lucas and John Hurt. The team received a standing ovation as they entered the cinema.

The celebrity guest list included sexy Vincent Cassel

Stunning Monica Belluci

Natalie Portman - Cannes jury member

Calista Flockhart, Ford’s beloved lady

Fashion model Linda Evangelista and Indian actress Aishwarya Rai

Beautiful Salma Hayek

Paz Vega, glamorous as never before

In Crystal Skull Cate Blanchett plays Irina Spalko, a hot Soviet agent whose elite military unit is scouring the globe.

When legendary movie director Steven Spielberg was asked if there will be any more of the sequel, he said there would be more Indiana Joneses:

Only if you want more of them… We will have our ear to the ground to hear what happens and that will decide where we go from here.”

Chinese actress Carina Lau with My Blueberry Nights director Wong Kar Wai and actress Charlie Young leave the festival palace after the gala screening.

The most stylish mommy of this week is Cate Blanchett. Yesterday she was spotted in Heathrow on her way from LA. She was wearing a black dress and a black jacket with black high heels and really in-style black shades.

Cate is a mother of three and next week she turns 39. She’s one of the very few celebrities who are against plastic surgery. Elizabeth: The Golden Age actress claims she will never go to surgeon’s office.

I see someone’s face, someone’s body who has had children, and I think they’re the song lines of your experience, and why would you want to eradicate that? Death is not going to be any easier just because your face can’t move.”

Cheers to the stylish and natural beauty.

It gets to be really popular to have children in Hollywood. Seems like every female star is or going to be pregnant soon. Some stars are only expecting, some have already given birth to their offspring lately. So who are these lucky mommies and daddies 2008?
Christina Aguilera gave birth to her son Max Liron on January, 11 this year, along with Nicole Richie who welcomed her daughter Harlow Winter Kate just on the same day too.

J.Lo and Marc Anthony became happy parents of twins Max and Emme on February, 22. Former Sabrina the Teenage Witch star Melissa Joan Hart and her husband Mark Wilkerson welcomed their second son on March, 12. Actress Halle Berry and her boyfriend Gabriel Aubry welcomed their first daughter on March, 16. And there are a lot more stars expecting their babies this year. Oscar-winner Cate Blanchett is expecting her third child in April. Fantastic Four star Jessica Alba and her boyfriend Cash Warren will be expecting their first baby in early summer. She is reportedly pregnant with twins.

Former Hairspray star and current Dancing with the Stars contestant Marissa Jaret Winokur is expecting her first child too. According to the star, a surrogate mother is 5 months along with her baby. Another celebrity to join stars is Mini Driver who’ll be expecting her first child in August this year. Angelina Jolie and Brad Pitt are said to be expecting twins, a boy and a girl this summer. These will be their second and third biological children. Jolie and Pitt also have three adopted children Maddox, Zahara, and Pax-Thien. Their first biological child, daughter Shiloh, was born in May, 2006.

Sweet-voiced singer Gwen Stefani and her husband are expecting their second child early this summer to join their son Kingston who was born May, 2006. Tori Spelling and Dean McDermott are having a girl in early June. Dean and Tori’s first child, Liam Aaron, just turned 1. Britney Spears’ younger sister Jamie Lynn, 16, and is also pregnant with her first child by her boyfriend Casey Aldridge. Oops, they did it again!

So, is there anybody else on the list? Time will show. For now, seems like diapers will be Hollywood’s must-have this year.