Welcome to Hidden Gems. In this this blog series, I discuss what I feel are underrated classics. This is whether it is film, movies, music, video games, or any kind of entertainment. In the inaugural edition, I discuss the 2006 slasher mockumentary, Behind the Mask: The Rise of Leslie Vernon. During my early 20s, I hadwent on a major binge of watching slasher and horror films. I knew the history and all of the classics. Then Behind the Mask: The Rise of Leslie Vernon came along and changed the rules for me. It had topped all slasher films that I had seen. It was both funny and intriguing. Sure, the…