Their most interesting episode, IMO, was the one where they investigated the St. Augustine Lighthouse.
The Florida lighthouse one is the one I always think of when I think of GH's best.
Speaking of TAPS investigating Florida lighthouses, the November 18 episode was filmed at a local landmark, the Pensacola Lighthouse. Whether the show is legit or not, I think it's cool they shot an episode here.
Is anyone else aware of any instances of a ghost hunting show filming in your area?