I think Hex is a staple of the park. It's a great (indoor) attraction which the park desperately needs to hang on too - there's certainly a rush from the longer DF queues when it starts raining!
The element of mystery is fantastic and love it each time I go on it. A must (by the way) if you haven't yet tried it out
Alton Towers, Animal Kingdom (WDW), Blizard Beach (WDW), Chessington World of Adventures, Epcot (WDW), Hollywood Studios (WDW), Legoland, Magic Kingdom (WDW), PortAventura, Seaworld (Orlando), Thorpe Park, Typhoon Lagoon (WDW), Universal Studios and Universal Islands of Adventure