We had a windows 95 machine when I was a kid, and my dad would play Doom, Wolfenstein 3d, Duken Nukem and Quake. Me and my sister would sit and watch until mom chased us out of the room.
I spent more time with Quake 2 and Half-Life, CS 1.6, and Halo on Xbox.
Brutal Doom is probably what got me into Doom in recent years, but I honestly just play it vanilla these days.