30 Rock - Season 1 Episode 5 Jack-Tor Work can be such a production.
Overview: After being pressured by Jack to plug GE products into her show, Liz integrates Jack into a sketch. While Jack hones his questionable acting chops, Frank and Toofer trick Jenna into fearing for her job and Liz wonders if Tracy is faking illiteracy to skip out on rehearsals.