For me it had to be Medal of honour allied assault online. That was untill all the haxers came out. The clan i'm in won clanbase Uk and Euro No1 spot. WOOT
Games on the N64 game me the most enjoyment of any console... Think it had something to do with that control pad with the thumb stick... awsome control.
Zelda Ocarina of Time
Goldeneye
Mario 64
F-Zero 64
Perfect Dark
Jetforce Gemini
Starfox 64
The Starwars games by Factor 5
all the resident evil games first on the ps1 then ps2,i used to play them in the dark,when them crows and dogs came out of nowhere,i nearly s**T myself,recent it has to be COD4 simply awesome.