Watching a History Channel documentary on the Oak Island "Money Pit" (I think @banjofox mentioned it and piqued my interest). Personally, I'm pretty sure Oak Island is a fool's errand, but I like seeing how they're approaching it.
The narration, at least, makes the classic paranormal/cryptozoology/OOPart/mystery/etc. mistake of assuming that no one ever lies, makes up tall tales, or misremembers; if someone has said something about Oak Island, it must be true.
(For example: the "booby trap" water shafts could simply be the limestone base of the island wearing away; there's nothing but anecdotal evidence that any inscribed stone slab ever actually existed; etc.)