Kian just showed me this video.. 3-D FPS fans should must check this out. Project Offset. The name is a bit strange, but its impressive I'll tell ya,

Doom 3 engine? Was nice knowing you. UT? Old news. Source? Over there. We’ll call you if we need you. You can all stand back, though. There’s a new king on the way to town.
via Joystiq

Checkout the latest videos and be floored.

Each particle here casts a shadow into the scene and is affected by motion blur

Woah bro, talk about rude awakening for id Software aye? But Carmack's still a hero in my heart.