Deus Ex: Human Revolution - 30 Min Demo Video @ IGN

There's a three-part DX:HR video commentary over at IGN that totals 30 minutes. I haven't had the chance to watch it but it should provide a pretty deep (but spoilery?) look. From the intro:

If you really, really want to know just about all there is to know about Deus Ex: Human Revolution, we've got you covered. Linked below just over 30 minutes of footage from Eidos Montreal's anticipated prequel, covering everything from the hacking mini-game to the specifics of the energy resource system's style of regeneration. Yes, it's that specific.

If you're looking for an overload of nerdy detail, game director Jean-Francois Dugas explains it all in the videos below.