Pixel Boarder is a physics-based snowboarding game being created for Xbox Live Indie Games.  The idea reminds me a little of Trials HD in that you control your character while trying to get a great score. The controls are simple but allow for great control of your character.

You control your character with your thumb sticks:
Left Stick = rider's right-side body controls (UP => extend, DOWN => contract)
Right Stick = rider's left-side body controls (UP => extend, DOWN => contract)
L / R Trigger = slow down time for more accurate controls.

That's it for control, but with no pre-built animations so everything you see going on is something you caused to happen.

Gameplay is played in 2D, but the visuals are drawn in 3D. It has a replay system where you can see your runs.  The music comes from the folks at 8-Bit Collective.