Lots of Cryptozoologists talk about The X-Files. The Sci-fi drama originally aired from 1993 to 2002. And, some episodes featured cryptids, like lake monsters or the Jersey Devil.
Jersey Devil
The X-Files has been gone for many years, although there are still re-runs on, and even I've seen some of them. But, on January 24, 2016, The X-Files will return for a six episode run.