In no particular order than when they came to mind:
Final Fantasy(Starting from the NES onwards)
Dragon Warrior(NES)
Zelda(Starting from the NES onwards)
MechWarrior(PC games)
Wing Commander(played WC1 on NES - awesome, the rest on PC, WC2 the best of the series IMHO)
Ultima(1-7)
...to name but a few.
Mass Effect has a lot of promise. Can't wait for the sequels.
Cheers,
Idaho
"There's no mystical energy field that controls my destiny. It's all a lot of simple tricks and nonsense."
- Han Solo