By Leah Rozen
August 04, 1997 12:00 PM

Kel Mitchell, Kenan Thompson

When an angry rival warns Ed (Mitchell) that he had better watch his butt, the dim-witted fast-food worker cheerfully complies, turning his head to peek at his posterior and then spinning round like a dog chasing its tail. And that, folks, is as witty as the jokes get in Good Burger, a lame comedy about two teens (Mitchell and Thompson) who dish out chow at a burger joint. Mitchell and Thompson have played the same characters in a recurring sketch on All That, a popular TV show on the Nickelodeon channel, and have their own spinoff Nick show, Kenan and Kel. Young fans will be amused by the duo’s dopey antics, but most adults will simply be perplexed. (PG)