But Jon Hamm sported a roughed up look and new haircut ... The 44-year-old actor debuted a new hairdo that was short at the sides and long on top. He appeared to have a bald spot too, but ...

Jon Hamm and Jimmy Fallon make Creed's "With Arms ... The clip of Creed's "With Arms Wide Open" begins with Hamm in a yellow shirt and long hair singing the words to the song.

Jon Hamm has boasted a three decades-long career and is most acclaimed for his Emmy and Golden Globe-winning role as Don ...