Reminder if someone hasn't seen these. In Late Show's page you can find Seinfeld related clips.
http://www.cbs.com/latenight/lateshow/dave_tv/ls_dtv_comedy_clips.shtml
Jerry Seinfeld Performs Stand-Up
Duet with Jerry Seinfeld and Julia Louis Dreyfus
http://www.cbs.com/latenight/lateshow/dave_tv/ls_dtv_comedy_clips2.shtml
Paul Looks For Dave On Other T.V. Shows