No way I can pick one, though Carson would be high on the list. I've worked with 3 of the guys mentioned, but I can tell you what my 2 favorite comedy albums are.

Richard Pryor's Live on Sunset Strip. THat album is comedy school. Not a word wasted, crazy stories that go everywhere but you can break it all down like diagraming a sentence to set-up, punch. Set-up, punch. Set-up, Punch, tag, tag, tag.

Hard to pick one, but the 2000 year old man albums were pretty fantastic.

If you are at all interested in the craft of comedy, laugh.com has a series of CDs that are interviews with different comics about comedy. Carson and the as yet unmentioned Woody ALlen were my favorite. Woody Allen talking about writing on The Show of Shows with Mel Brooks is phenomenal.