Re: Truly scary X-Files eps...
Ones that generally get overlooked are some of the later shows. I recently rewatched Season 8 and it has some of the darkest episodes. Roadrunners, for example. Then take the disturbing dream imagery from Via Negativa. Also, Orison from Season 7 is a much better sequel to Irresistible than I remembered: Scary as hell - "Glory, amen!"
"If your level of [...] fandom is such that it doesn't allow you to enjoy this film, then your level of fandom isn't doing you or "Star Trek" any good."
- Steve Penhollow, The Journal Gazette