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…

Before this movie, Scrat and his nut provided short breaks between the main plot for quick comedy. But with the introduction of Scratte, comedy relief transforms into a soap opera. Just like the classic silent films of the golden age of Hollywood, no words are spoken between the two squirrels, but complex emotions still get through to the viewer. Even the scorned acorn experiences a powerful sense of loss and…