Trivia: This is the only movie of the series where Scrat never interacts with the main heroes.
Trivia: When a human warrior is pulled from his horse and thrown to the ground by an orc during the first battle between the orcs and the humans, he yells a Wilhelm scream.
Trivia: When one of the Galactic Rangers' robots falls off a platform, he yells a Wilhelm scream.
Trivia: Although Jennifer Saunders and Julia Sawalha play mother and daughter, Saunders is only ten years older than Sawalha.
Trivia: Paul Reubens revealed that, in addition to old makeup tricks, digital effects were used to de-age him for the film, to make him look more like he did in the previous films. Reubens remarked that when he was told how expensive the de-aging effects were during post-production, he realised it would have actually been significantly cheaper for him to have just gotten extensive plastic surgery to make himself look younger before filming.
Trivia: When two food products run for cover during the end of Firewater's and the Non-Perishables "Great Beyond" belief story, you can hear the Wilhelm scream.
Trivia: Eddie is given a heartfelt pep talk by his idol Matti Nykänen, the Finnish ski jumper. Nykänen actually spoke no English at all.
Trivia: Despite receiving prominent billing, Jonah Hill is only in the film for three minutes.
Trivia: Brent Spiner performed the majority of his scenes alone, with no other principal actors on the set. In fact, Spiner is digitally inserted into some scenes where he appears with other principal actors.
Trivia: The line "he'll stop doing it" "stop doing what?" followed by violence was used almost identically in Iron Man 3, also written and directed by Shane Black.