1000 Clowns
1000 Clowns was a four-person rap group most notable for two songs: "(Not The) Greatest Rapper" which appeared on the Good Burger soundtrack, and "Kitty Kat Max" which sampled "For What It's Worth" by Buffalo Springfield. "Kitty Kat Max" was 1000 Clowns' debut single, released in late 1997.
source: Wikipedia