Charles Grodin, David Alan Grier, Matthew Sweet Late Show with David Letterman : Season 4 Episode 131

In a running gag that was started two nights before (in homage to something that appeared occasionally on Late Night), Zahshu, ""The World's Only Performing Goldfish,"" develops a severe case of stage fright. At the end of the show, he is removed from his fishbowl and is placed on top of a skateboard.