No matter how you slice it, Doom is a fantastic game. It has survived many interpretations and I'm sure it will spawn many more (visions of playing the game on a Swatch watch are dancing in my brain). The absolute best way to enjoy the game, however, is on your PC playing against another person who is connected via modem. Everyone knows that. The home systems, no matter how good they currently are, just can't duplicate the PC experience of Doom. Yet.
That said, I would like to start things off by saying that both the Jag and SNES versions of the game are amazing. Obviously, the Jag version of the game is better, but the 16 bit SNES port does have a few things over it's 64 bit (for purposes of getting through this review without putting anyone to sleep, I'll use Atari's math) rival.