In one scene, "We're in the Money" can be heard.
the portrait with the changing expressions
Large letters on can of food in kitchen read "OPE" which was the recall code in Dr. Strangelove.
When Lars and Ernie talk about how much they hate each other, Ernie says, "Double, double!" Nathan Lane, the actor who played Ernie, also played Max Bialystock in the stage musical version of "The Producers" and later the 2005 version.
The portrait of Rudolph Smuntz magically changes from a dour expression to smiling when his descendants make a significant change in their behavior, just like the portrait of Viktor Frankenstein.
At the auction party, Ernie Smuntz says "Hakuna Matata" to a Sheika man.
A still is shown for the "New on Video" bumper. Thumbs up from Siskel; thumbs down from Ebert.
mentioned on Fretts Film Forum
in Roddy's DVD collection
When Fred is throwing snow balls at Santa the theme song from Mouse Hunt is playing in the entire scene.
Mentioned by Al Pacino (Bill Hader) in the "Hamlet" audition segment
Gore Verbinski also directed this film
mentioned in dialogue
Clement Blake's Lifetime Achievement Award in Hoboing
"Did they base their bear knowledge on the mouse from Mousehunt?"