I would also give a huge thumbs up for the Khan Academy. Sal is a GREAT teacher. Over the past months I've learned linear algebra and calculus. Hey, I was an animator - I didn't need to take math in college. If I could, I would make every TD in my dept. watch these videos.
Next step - geometric algebra. Never heard of it? Me neither until recently. If you ever wanted to tie vectors, quaternions, imaginary numbers together without having to convert everything to coordinates - this is the ticket.