1: Metroid Prime - the first time i played metroid, and the first 3D metroid game. Absolutely brilliant. though MP2 is also great i like MP just that bit more.
2: Super Smash Bros Melee
3: Perfect Dark
4: Conker's BFD
5: Eternal Darkness
at least thats what comes to mind straight away.... but i think its pretty accurate, as theyre the games i played most (except Prime and ED since theyre not multiplayer)