So, I was going to write up a full suite of my impressions on the Portal 2 demo that I saw and how mind-blown I was, but then I realized has been put the whole thing up on Youtube. The videos do a far better job of conveying Portal 2's awesomeness than I ever could. Check them out after the jump.
I mean, is it really even possible to use words to convey that awesomeness? I don't think it is mentioned in the video, but Portal 2 will come with a two-player co-op mode which will be "much harder" and will be designed from the ground up with Co-op in mind. Portal 2 ships in 2011 for PS3, Xbox 360, Mac and PC and we'll definitely be bringing your more details as they become available.