The credits contain references to famous pieces of art, including Adam and Eve by Lucas Cranach the Elder, The Arnolfini Portrait by Jan van Eyck, American Gothic by Grant Wood, and Andy Warhol's Campbell's soup can. Also alluded to are the lesser known Couple Arguing and Romantic Couple by Robert Dale (drawn in a comic book style similar to that of Roy Liechtenstein) and a 1940s "Am I Proud!" poster by Dick Williams (showing a woman holding cans).
In the second season the shortened version of the credits was shown from episode 2.07 to episode 2.11.
In the first season a shortened version of the credits was shown in the Premiere and the Finale.