Episode 0873


 * Luis tries to open the door leading to Big Bird's nest -- but he can't, because Mr. Snuffleupagus is leaning against it.


 * Big Bird tries to teach Mr. Snuffleupagus to ice skate. He doesn't get it at first, but finally he succeeds. (This is a scene from the Ice Follies touring show.)


 * Biff asks Sully to recite the alphabet.


 * Bill Cosby plays twins who count from 1 to 20.