Okay, here is my opinions,
Resident Evil Zero: Not only will it give you a good scare or two, but if your a fan of the franchise or wanna get into it, this is where it all starts baby, oh YEAH! Doesn't get much better then this, leech kicking, hunter killing, zombie nut kicking goodness.
Star Fox Adventures: If your into adventure games this is a definate pick-up IU had LOADS of fun with this titles and this is definatly one of the top ten gamecube games, plenty of the item collecting nostalgia that takes you back to the days of Mario 64 and Banjo-Kazooie
Eternal Darkness: Another creepy title, not as 'jumpy' as resident evil, nor does the graphics match resident evils, but the story line and impressive gameplay is where the game is at. Its definatly as involving as any psychological thriller of a movie, action and storyline and plenty of puzzles let you know this game is one of the BEST!
Metroid Prime: one of the OLDEST franchises were amped up for this game and it didn't come out half bad. Surprisingly it has the same feel as the old Metroid games even though its 3-D and first person, plus it gives a needle full of Nostalgia but from back in the early nineties.
Timesplitters 2: This game is nothing less then FUN! Its a FPS and is a fast paced story lined based game from the people that brought you 'Goldeneye' on the 64, this game feels SOOO familure it might scare you.