Perhaps feeling Stephen Colbert isn't overexposed enough, Marvel Comics has gone and written him into a Spider-Man comic. (The link also contains pictures from the time "Spidey" met the cast of SNL - the good cast from the 70's - and the time the Avengers met David Letterman. Sadly, it does not contain pictures from any of Johnny Carson's appearances in the 60's Spider-Man comics, but I have them around here somewhere. Stay tuned...)