Because He's Hot: Jon Hamm Suits Up for 'Letterman' (PHOTOS)
The hunky Mad Men star suited up last night for an appearance on The Late Show With David Letterman to talk about his busy month ahead, which includes a part in the movie Friends With Kids (March 9) and the long, long, long-awaited return of Mad Men, on March 25.
Dressed in a gray suit, Jon was all smiles as he made his way inside the Ed Sullivan Theater. Seriously, is it March 25 yet?
Check out photos of the Mad Men star in our gallery above and below!