Though they're clean-shaven on Mad Men, most Sterling Cooper men have grown off-season beards. Michael Gladis, a.k.a Paul Kinsey, explains: "On the show, everybody wants to imitate Jon Hamm, but in real life, everybody wants to emulate me." [N.Y. Magazine]
I haven't seen Vincent Kartheiser in anything else but Mad Men. Everytime he's on screen I just want to yell at the TV.
He is either a smarmy, duplicitous weasel or a very good actor.
I never thought of him having a Keith Urban thing going on, but there you go.