Xbox was interesting. I was primarily on Sony consoles , but I eventually bought one because Splinter Cell and Ninja Garden looked too good. I was obsessed with SC after the initial E3 trailer. Looked like a dream game, being a stealth and big tactical shooter fan and Tom Clancy game then.
Enjoyed the hell out of Halo. I was skeptical of the straight 10 scores in EGM, but it definitely turned out to be a game to remember. Beat it twice at a friend's house before I owned a Box, then borrowed it and beat it again myself.
Will be interesting to see what other games you talk about. Look forward to that trip down memory lane.