If you have ever seen the show crank yankers, then you probably know "Special Ed" the retarded puppet. The voice actor and comedian Jim Florentine does some pretty funny stuff on the side too. Comedy centrals "motherload" features some clips from his DVD series "meet the creeps" where he and a few other people to obnoxious things, like bringing beach pails into an "all-you-can-eat buffet" and filling them up to the top. He also does some telemarketer phone pranks that are available on cd, but there are a few samples available on this site
This one is pretty good:
http://www.jimflorentine.com/mp3s/Horny_Priests.mp3
