Of the rides at PKI these days:
Flight of Fear. Why? It's an amazing and wonderful ride...from the theming (which Paramount could do a better job of keeping up) to the launch to the marvelous hang time!
I also miss Phantom Theater, King Cobra, The Flying Eagles, and...of all things, Scooby's Ghoster Coaster. Laugh all you want.
And way back there, Enchanted Voyage. And even The Rotor!
Then again, what do you expect? I still miss The Shooting Star at Coney Island in Cinci!