Reading Ashley's post, I started remembering more about Hershey.  My family used to go there once a year, but sadly it just became too expensive.  My favorite park would have to be Knoebels, up in Elysburg PA.  The place is great.  It's in the middle of nowhere, with some excellent space directly next door that is perfect for camping.  The place is full of trees, so it's always nice and shady, the food is great, and the rides are sweet.  They have 3 roller coasters (2 wooden and one indoor steel), with a third under construction (ok, there is a kiddie coaster too, but that doesn't count).  Out of them, I love the Pheonix, the oldest of the park's current coasters.  My favorite ride there, though, is the Powersurge.  It's set up with a six-spoked wheel.  On the end of each wheel, there is an arm that comes down, and connects to two sets of seats (one set on each side of the arm, 2 seats per set).  This wheel is attached to a horizontal arm.  The arm lifts the wheel into the sky, so it's vertical.  then the chair sets (the individual sets of 2) spin freely, as the arms the seat sets are attached to rotates, AND the wheel itself spins.  It's pretty insane.