I recently watched the secret stash version of the Jeff foxworthy roast. i have watched several stand up comics comment on your favorite and ill say whether or not i have seen it on comedy central or not. 
favorite comics:Dane cookRon White A.K.A. tater saladLarry the cable guyJeff foxworthyBill engvallDemitri MartinCarlos menciaSteven Colbert (favorite)Jon Stewart
These r nt all of them, but there  all that i could think of off the top of my head