There's no story here...

The Bermuda Triangle is a completely made up thing. There is no greater incidence of disappearance here than anywhere else when you consider how much traffic there is.

The legend is a mix of natural phenomena and lies, and this "documentary" embarasses Discovery terribly. Dark energy?

They mention the Cyclops - ship sinks, no one knows why. TRUE

They mention the Umtata - and then COMPLETELY EXPLAIN IT.

They mention Flight 19, and propose a theory, and then a counter theory - neither of which is amazing or unusual.

There IS an interesting story to be told, and it's of how Charles Berlitz invented this idea and capitalized on it.