I believe Leno would be a good comparison, hardly seems like he retired once starting the Tonight Show. EDIT: Am I incorrect that he was (and still is) a well-

I believe Leno would be a good comparison, hardly seems like he retired once starting the Tonight Show. EDIT: Am I incorrect that he was (and still is) a well-respected comedian prior to taking the gig? He changed his act but his career/success took off. Colbert's already pretty successful but this doesn't seem like a retirement move.