Just a few funny screens...
Look closely, there's a headcrab on the cutting board.
A fort made from random crates and junk
Alyx pissed off - SPOILER WARNING
Gman is always watching you
You know, about Gman, he pops up quite often. You just have to have quite an eye to spot him. I only saw him twice, the one in the screen above, and another time at the start of the game when he flased on the big screen for like half a second. Only reason I spoted him in the screen above was because the action died down and I had to find a way to get out of the area. Then once i spotted him, he walked away in a cool manner.
And man... I love the fact that there is next to no clipping in this game. In that screen above, with Dr. Breen grabbign Alyx's face, his hand doesnt even go through her where in most games it would. Objects that are affected with physics dont even clip at all either.