"Jose Chung’s From Outer Space," "Humbug," and "Clyde Bruckman's Final Repose" were all written by Darin Morgan, who was introduced to the X-Files audience as an actor, when he played the humanoid tapeworm "Flukeman" in the episode "The Host."
Though I am not much of a TV viewer, and I missed the entire original run of the show, I managed to see reruns of most of the Duchovny-era X-Files episodes. I think Darin Morgan's screenwriting was perfect for the show.
Those are two of my other top ten.
LOL
Loved Humbug because Jim Rose and The Enigma were in it.
I missed most of the post-Mulder eps.
Just could not get into the Terminator liquid metal dude.