This should come as no surprise to you all...

[PaperMarioLover]

Everyone already posted the obvious picks, so I'll suggest my favorite game that's flown under the radar, Vexx.

Ok...interesting....so what is that about?

It's a 3D platformer akin to 64 and Sunshine, but with a darker atmosphere

I'm sold!  I'll have to look into that.  By the way, your game looks cool DJ Coco!  I'll have to play the demo for your game.  When is it coming out?

You should check out my game when you get the chance.  Updates every week, and sometimes more than one update per week:  Paper Mario:  The Star Princess