The future of game engines..

Half-Life 2 Source's latest gem.. High quality facial animations.

Unreal Engine 3.. Insane quality for bump maps and alpha maps.

Euphoria Engine.. Insane everything.

The future looks good. (Of course, the Hero Engine is up there with these, but we all know plenty about it!)
Those are all very appealing. I love the animations in that first Euphoria vid.

I'm especially excited about TF2, though... I've been a TF addict since it first appeared as a mod for Quake 1.