25. JIMMY KIMMEL AND SARAH SILVERMAN
AGES: 41; 38
TITLES Host, Jimmy Kimmel Live!; comedian, actress
SMART BECAUSE He's the rising late-night talk-show host who's truly taking advantage of the Internet with clever, celeb-packed bits kick-started by then girlfriend Silverman, who surprised Kimmel on his show with the hilarious Emmy-winning video ''I'm F---ing Matt Damon.'' As his buzz and ratings build, Kimmel's hard work will pay off if ABC signs soon-to-be free agent Jay Leno: He'll get either a bump in viewers by following Jay at 12:30 or a bump in salary by moving to a rival network like Fox.
Image Credit: Silverman: Paul Mounce/Corbis; Kimmel: Frederick M. Brown/Getty Images
MOST POPULAR GALLERIES OF 2008: Sure, they call it the boob tube, but it takes some pretty big brains to make it in the TV biz. We polled Hollywood insiders to ID the TV titans they say are driving today's sharpest shows and deals