Let me first say that I absolutely adored the original Portal.  It was cleverly written, had tight gameplay, and was an all around fantastic game that kind of hit us out of nowhere.  Now, continuing on that success comes Portal 2 featuring a new kind of AI- Wheatley.  If the below intro is any indication, my being cautious about checking this out is completely unfounded.  Good Lord it looks amazing and I found myself cheering a bit near the end…take a look to see what I mean and you can also head here to check out more videos!