Gareth Smith, who helped create titles for Thank You For Smoking, Juno, and Jennifer’s Body, posted 5 tutorials on Vimeo on select topics on creating text animations in After Effects.
For more on text and title design, see Type & After Effects Resources at AEtuts. Here’s Gareth’s first tutorial…
Animated type tutorial 1: Raining type from Gareth Smith on Vimeo.