The scene where Sid's family arrives riding the log looks just like the Beverly Hillbillies in their car. The seating is the same with Granny sitting high at the back.
Manny sings part of "The Candy Man."
The Chipmunks are introduced like and speak the language of the Ewoks
When the chipmunk brings up the large shell horn, he cocks his head, much like Mel Gibson in Lethal Weapon.
The chipmunk's blue face paint references that of William Wallace in Braveheart.
Shira calls Diego "warrior princess"
Diego mentions his former pack from the first film
Sid's use of the phrase "... happen captain" resembles Jack Jeebs comment as he starts the neurolizer to bring back "J's" memory.
The chipmunk blowing the giant snailhouse spoofs Gimli blowing the horn. Then the army of chipmunks' charge spoofs the Rohirrims downhill charge at Helms Deep
At the very beginning of the film, when Scrat falls down to the earth's core, he briefly passes by Buck from the third Ice Age movie, tampering with his nemesis Rudy.
Shown as upcoming 2012 film.
Referenced in the closing credits
poster visible in Film Brain's room
Ben mentions being in the movie.
Jay mentions that Denis Leary from the film will be on tomorrow
Advertisement on London double decker bus
In Mad Moments, it was mentioned that people went to see this movie in theaters to stay out of the heat.
The movies were mentioned in the Concise Age skit.
Jay Leno mentions that she was in this film
review about the movie, including clips shown, and talk someting about the German dubbing work
Wanda Sykes introduces a clip from her film
Movie is reviewed
Denis Leary introduces a clip from his film
Movie reviewed in this episode.
Nicki Minaj introduces a clip from her film