I\'d have to opt for PD over goldeneye, even though goldeneye was better at the time, we still crack out PD every now and then to have multiplayers, it\'s just so much fun. Everything you could want in the goldeneye multiplayer improved was improved, and it was just all round fun.
Also, this isn\'t really multiplayer, but getting a bunch of mates around and having 8 man team battles in tekken, right from tekken 2 to TTT. LOTS of hours put into that, and it was just fun.
Also, WWF wrestlemania 2000. WCW vs. nWo revenge was better at the time, but in the end WWF wrestlemania was bettter (both games on N64 made by THQ). We put HOURS and HOURS into that game, and it was a damn lot of fun.