If you have heard of this park you must be a crazed sheep riding hooligan or are officially the world biggest coaster freak, http://www.rainbowsend.co.nz (the music may kill you). I visited it while I was is Sheep Country (New Zealand) and it was actually much better then I thought it would be.
Also as some have mentioned, DCA. God, I wanted to hate it so I would be more accepted in the coaster community but I enjoyed myself a lot. Sure its more sort of a upmarket Knotts it was still well done.