Obscure but awesome

[Mr. Graves]

Impossible Mission - C64
Gauntlet - NES
Flashback - Genesis

[BatChao]

I remember that Sparkster game... some Possum with a rocketpack, right?

And Incredible Crisis is pretty damn awesome... you are correct, edczxcvbnm.

Another pretty cool, yet not that popular game is Magic Pengel for the PS2. You can draw your own monsters and they come alive and you battle them at arenas and stuff. They gain stats and moves depending on what colors you use, what kind of body parts they have, etc. It's pretty damn original, and drawing your own monsters is fun too!

[Symphonic]

Beyond Good & Evil. That was a great zelda-style game with an awesome storyline and surprise ending.

[Storm]

Also the old Sierra games for PC: King's Quest, Space Quest, Police Quest, Leisure Suit Larry and their many sequels.

Damn, those games rock. I spent my pre-teen years playing all of them. Quest for Glory was pretty good too, but King's Quest was by far my favorite.

I think Actraiser 1 and 2 were underated.