Cedar Point is probably one of the best coaster farms.
Been there several times when I was in highschool, very cool place.

The Six flags just outside of Chicago has accumulated quite a few
excellent coasters too.
They seem faster and scarier... course I'm older and can't take a four hotdog lunch and then a tilt-a-whirl follow-up.

Cafeenman, those-self-spinning cup rides are the best.
(and worse as you found out hehe)