[url="http://www.gamespot.com/news/2005/07/22/news_6129611.html"]PlayStation Meeting Report: PS3 hardware, dev kits, new games[/url]
A lot of info on the PS3, at least from a technical point of view. The central topic is the plethora of free middleware the PS3 will support in order to make developing for the system easier, including Epic's Unreal Engine 3 (though not free).
Some demos were shown, although none of them straight from the machine itself I imagine, and there were some hints that the system will indeed be more expensive.
You can also watch the short-but-sweet Resident Evil 5 (PS3, XB360) trailer, if you haven't done so already.
I only found Lair to be impressive. Gundam looked kinda boring and the PSP updates were exciting to hear.