This second trek with the mammoth, the sloth and the saber-toothed tiger feels like a rush job, a half-assed effort to cash in. Ray Romano, John Leguizamo and Denis Leary lend their voices once again, joined by Queen Latifah as another mammoth who thinks shes a possum (ha, ha, ha ... choke, slorp ... ha, ha, ha!). The Earth is experiencing the end of its ice age, and animals must escape a valley before it is flooded and history plays out. Because this is a kids movie, it doesnt end with extinction for its stars (although thats pretty much what happened in real life, and it wouldve been an interesting lesson for the youngsters). Theres lots of sanitized fart humor, too much stuff involving Scrat chasing his acorn and animation that isnt all that good-lookingall making this one pretty mediocre fare.