Very good presentation. I know that Facebook and Twitter stuff will get laughed at, but it is pretty cool actually, it looks like they did a good job with it. The motion control stuff...I'll believe it when I see it, but that demo they showed makes me think that maybe someone has finally done motion control right. I'm more interested in the voice recgonition/scanning aspects.
I do like the layout of their presentation - they got all the games out of the way immediately and didn't waste time with sales figures. I sort of figured it would taper off into boredom from there but between the MGS announcement, FB/Last.fm/Twitter integration, Media watching with a XBL Party, and the Nepal thing not looking awful...well, this may have actually been my favorite E3 showing of theirs since the console launched.
MS always is in the unenviable position of going first, but they still seem to hold up well every year compared to what the other two companies do. I doubt this year will be any different, although Sony is definitely due for a good showing. I doubt Nintendo cares that much since they've already run away with it.
But yeah, the 360 is turning into this crazy Skynet device that does too much and will kill all of us.