Credit: David Livingston/Getty Images Photo: Nathan Fillion Poses for Pictures at the Disney ABC Television Group's Summer TCA Party on August 1, 2010

Just like Richard Castle, Nathan Fillion isn't hurting for money. According to TV Guide, the Castle star rakes in $100,000 per episode of the hit ABC crime series, meaning that over the course of a regular 24-episode season, he'll make $2.4 million. Not too shabby! For comparison, Nathan earns the same amount as Mad Men's Jon Hamm, but he's nowhere near as valuable as the Desperate Housewives gals, who each bank $400,000 an episode. He's also got a lot of catching up to do with House, M.D.'s cantankerous Hugh Laurie, who scores more than $400,000 an episode.

Source: TV Guide