Who'd You Rather?

"Napoleon Dynamite" star Jon Heder turns 30 on Friday, while country music star Keith Urban turns 40.

"Desperate Housewives" hunk Josh Henderson turns 26 on Thursday, while the "Hebrew Hammer" himself, Adam Goldberg, turns 37.

MySpace queen Tila Tequila turns 26 on Wednesday, while R&B diva Monica turns 27.

"Van Wilder" star Ryan Reynolds turns 31 on Tuesday, while funnyman "Weird Al" Yankovic turns 48.

So-called funnyman Carlos Mencia turns 40 on Monday, while geek chic movie star Jeff Goldblum turns 55.

"Office" funnyman John Krasinski turns 28 today, and "Lord of the Rings" star Viggo Mortensen turns 49.

"Extreme Makeover: Home Edition" hottie Ty Pennington turns 43 on Friday, while "SNL" alum Chris Kattan is 37.

Somber action star Jean-Claude Van Damme turns 47 on Thursday, while dreamy teen idol Zac Efron turns 20.

Two of the biggest names in hip-hop are celebrating their 35th birthdays on Wednesday: Wyclef Jean and Eminem.

Oscar winner Tim Robbins turns 49 on Tuesday, while Grammy winner John Mayer turns the big 3-0.

"Las Vegas" star Vanessa Marcil turns 39 on Monday, while R&B singer Keyshia Cole turns 26.

R&B star Usher Raymond turns 29 on Sunday, while "Borat" funnyman Sacha Baron Cohen is 36 on Saturday.

"X-Men" hunk Hugh Jackman is celebrating his 39th birthday on Friday, while "Growing Pains" child star turned televangelist Kirk Cameron is 37.

"90210" hottie Luke Perry turns 41 on Thursday, while Jewel's longtime boyfriend Ty Murray turns 38.

R&B songstress Mya is 29 on October 10, while dance queen Bai Ling turns 37.

He may not be able to leap tall buildings in a single bound, but "Home Improvement" big bro Zachery Ty Bryan (26) does share a birthday with "Superman" star Brandon Routh (28).