The earliest memory I have is of me lying on my side, watching my father play "Titus the Fox" on a '386 (in 1996). That's gotta be it. A 1992 platformer with nice graphics and pretty good physics, I remember playing it countless times (didn't have access to many games since we were the only ones to have a computer on the street at the time), but never getting past the first boss, and I never finished it. I might get dosbox and play it just for nostalgia and to finish it for once.