I'm very fond of Knott's Berry Farm. I actually haven't been there in two years, so I should go again soon. :o Six Flags is nice as well, minus the typically monstrous lines.

Favorite ride? ..I'm not sure I have one! The Silver Bullet at Knott's is really smooth, but Scream fro Six Flags is probably better. I'll get back to you on that in a few years. :P