NPR's guide to the running gags from the show.
G.O.B. triumphantly announces the name of his latest conquest.
6 episodes feature this joke:
Najbagdalajga. (Because he thinks she's Michael's type)
Related Joke: "He has a type."
The business model.
Sources: Joke data compiled by Adam Cole / NPR. Episode metadata from The TVDB via a Creative Commons Attribution 3.0 United States (CC BY 3.0 US) license.