My favorite out of the series. Introduces a new character and he cracks me up. I love this movie.

When "Sid" crashes through the ice and discovers a nest of eggs, he is soon rather unwillingly adopted by their parent and finds himself in a lost, more dangerous and Jurassic, world. Meantime, atop the ice his pals are anticipating the arrival of a baby mammoth while sabre-tooth "Diego" is having a bit of a mid-life crisis and "Scrat" might just have found love during his latest acorn-tussle. The gang soon realise that "Sid" has gone AWOL and that they are going to have to risk life and limb to try and rescue their buddy from his new hostile environment - so off they head into the perilous lan... read the rest.