I checked out LinuxWorld today in SF. There wasn't that much interesting to me personally. I think the industry is pretty mature at this point. I suspect LinuxWorld will eventually go the way of Comdex, since there really wasn't much there that you couldn't look up on the web anyways.
One company was showing off a 8-way dual-core Opteron box in a 5U case. I wonder what the power consumption on something like that is?
Afterwards, I killed some time in San Francisco, and went to the Mission to see a documentary called "Occupation: Dreamland". Wow. It's entirely composed of embedded footage from the US Army's 82nd Airborne unit when they were occupying Falluja in early 2004 (before the Marines went in and laid seige to the city). The documentary seems politically neutral to me - there's no narration - although several of the troops do get to express their views. It's quite well done because you get to see the Iraqi's side of things as well, as they argue with the troops in the street, and when their homes get raided in the middle of the night. Falluja really looks like a hellhole. You see the troops finding hidden weapons, and responding to RPG attacks. The scariest part is a live IED explosion that they captured on tape.
Anyways, everybody ought to see this film, no matter what their politics are. It's the clearest snapshot of what's going on over there that I've seen. I don't think it's been shown in many places yet, though.