good list.. I'd recommend "Irresistible" (S02, E13).. not supernatural, alien or conspiracy theory but just a good old fashioned creepy serial killer episode.. this episode and "squeeze" are the ones that stuck with and creeped me out the most

and "Humbug" (S02, E20)... a great campy episode, remember in the 90s when people were ironically into freak shows a la that Simpsons episode where Homer joins a show where he gets shot in the belly with a cannon? Well this is the X-Files version of that

ALSO... the real life follow up to "The Host" episode

http://www.thesmokinggun.com/buster/toilet…

The Vampire one with Luke Wilson is quite enjoyable. Honestly there are so many good episodes this show was on fleek.