Let's see...

There's Paramount's Great America up in Santa Clara. Awesome stuff, my family has season passes there.

Six Flags Marine World in Vallejo. Sucks.

Knott's Berry Farm down south. Wonderful place, and the best fried chicken in the free world.

Disneyland and Disney World. Obviously awesome.

Haven't been to Magic Mountain ever, even though I've always wanted to. ;_;

All else is irrelevant.