NPR's guide to the running gags from the show.
The Bluths have a suspicious relationship with the former Iraqi dictator.
7 episodes feature this joke:
Saddam's falsely imprisoned look-alike starts the website "I'm no scar. Dot com."
Related Joke: imoscar.com
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.