Paul,
Steven Wright is my favorite!!! Saw him recently at a local club, unbeliveably funny. He did bunches of stuff I hadn't heard before (almost nothing from "I Have a Pony"). Anyway, I have a giant collection of comedy on my player too (Steve Martin, Eddie Murphy, George Carlin, Lewis Black, etc...), I would suggest others load up on at least a bit. It's a nice break from music or talk radio IMO.