Quotes
Diego: Are you calling me a liar?
Sid: I didn't say that.
Diego: You were thinking it.
Sid: [whispering to Manny] I don't like this cat. He reads minds.
Mistakes
After Scrats landing you can see three pair of feet who are stomping on him. At least two of the three pairs belong to tetrapod vertebrates (as can be seen when the camera pans up to behind the herd), so where is the second pair of their respective owners feet? See more...
Movie Mistakes blog
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Other great sites
Ice Age (2002) - 2 trivia entries
starring Cedric the Entertainer, Denis Leary, Diedrich Bader, Goran Visnjic, Jack Black, John Leguizamo, Ray Romano, Stephen Root (add more)