The BEST episodes written by Tom Maddox
#1 - Kill Switch
The X-Files - Season 5 - Episode 11
A super-intelligent virus program is let loose on the internet and begins to grow and expand by itself, eventually killing its creator when he tries to eradicate it.
#2 - First Person Shooter
The X-Files - Season 7 - Episode 13
The Lone Gunmen call Mulder and Scully to a virtual reality development lab where they learn that one of the program testers was killed inside the computer generated game environment by the digital image of a woman. Needing to get his yah-yah's, Mulder enters the game to fight the woman, but Scully must step in to save him.