FYI: this was from a long running local Philadelphia area Saturday afternoon TV show called "The Al Alberts Showcase". The man amongst all those kids is Mr. Alberts himself. This bizarre show was the genesis for a lot of Tim and Eric skits.
There was another clip from this show on YouTube which involved a little kid doing a Michael Jackson performance. He comes out to the strains of Billy Jean, and immediately breaks into repeatedly doing the grab your crotch and thrust move that Jackson would do. I almost submitted it here; maybe someone else should.