On any other list, Cosby would hover somewhere in the top five, but most of the comics I'm into are either a) inspired by Cosby, or b) inspired by those who were inspired by Cosby. I'm a product of the 70's and 80's (incept date: 09.20.1971) so I had a healthy dose of Fat Albert, The Cosby Show, and Jello pudding commercials during my childhood. The funny thing is, outside of a few appearances on the Tonight Show, I didn't have that much exposure to Cosby's stand-up until probably my early-twenties.
An even worse crime, I hadn't been exposed to Noah until probably seven years ago or so. Of course now it's one of my favorite routines of all-time, I just wish I would have discovered it a lot sooner.