Ok, I just got around to playing the game. It is so awesome, I love the level of interactivity. I knew they would put advanced physics into the game but wow, I didnt expect you could do things like pick up the phone, or get trash from the trash can. At the beginning, a guard told me to throw away a can that he tossed on the floor. I picked up the can and tossed it in his face.
But then he slapped me a few times with his shock stick.
I also love how much they put into the characters. Thier expressions are amazing, its really like a real person is talking to you. It isnt just the way they move thier body but rather thier facial expressions. Like, Alyx was arguing with this scientist and her eyebrows were crunched up like they would be with someone that was arguing... and then if you looked over to her father, he had that look on his face like "here she goes again...". Man, the detail is way too awesome. It isnt really something that ou can see in a screenshot, you have to be playing it to really take notice.
I am really hooked on this game. The buggy... the gravity gun... the aintlions... man I love it all.