I'm not really a big fan of theme parks, mainly because of their bloody expensive admission fees and long queues for the rides.
I've been to the Disneyland in Anaheim, CA, mainly because one of my sisters lives just 10 minutes from it (and yes, she can see
and hear the fireworks display that they put on every night). I've also been to Magic Mountain and Knotts Berry Farm in previous years.
Here in MN, we have
Valleyfair, which I've been to a couple of times. Same thing: steep admission rates and long lines for the rides.