![Classic Cosby Show Clip — Rudy Asks ‘Who It Is’ [VIDEO]](http://townsquare.media/site/159/files/2012/09/hqdefault12.jpg?w=980&q=75)
Classic Cosby Show Clip — Rudy Asks ‘Who It Is’ [VIDEO]
On September 20, 1984, the Cosby Show premiered on NBC. On September 21, 1984, sales of really bright sweaters skyrocketed. Here's one of my favorite Cosby Show moments where Cliff tries to teach Rudy how to enter a room.