Good. "Miracle Man" and "Shapes" are pretty unremarkable, although I like "Darkness Falls." Given the Vancouver area, I'm surprised they never set another episode in a logging community (unless they did and I can't remember it!). The episode has teeth, especially for a standalone -- it's about as close to death as our heroes get in a monster of the week episode ("Field Trip" is the only other standalone episode I can think of that comes close).
I too liked Darkness falls, but it was the scenery that I really liked. If they do Remaster X-Files like I've been hearing, this episode might be one of the highlights just for the scenery and sunrises alone.