I've watched this several times over. It's such a great trailer for the Half Life 2 games that I almost want to reinstall them even though I just played through them about a year ago. The song choice of The National's "Exile Villify" is perfect.

http://www.youtube.com/watch?v=3ZhnGQXWi1U&feature=player_embedded

Not bad.

I'd much prefer a trailer for Episode 3 though ;)

Not bad - though some parts could have benefitted from more in-game sounds.

Which reminds me that I still haven't played Episode 1 and 2. Might as well fire them up!

I confess, I haven't played any Half Life, at all.

Very nice music, although some cuts seem somewhat... random? The car flying into the camera for instance may have worked better if placed right before G-Man's exit. To be honest, the Black Mesa Mod has been my most anticipated Half-Life game since 2006 :P
I guess if Gabe and co. get back into the Half-Life mood, they'll work on another chapter (in my opinion Portal 2 has already set the way for a new Half-Life). It's never too late, I guess.

EDIT: BTW -> Chell in the Rain ;)

Wow. The song and the rain go together perfectly with the image.

Indeed. Still, it's somewhat spoilery if one hasn't played through Portal 2. The song was playing in one of the radios you find scattered around the Test Chambers, a shame it wasn't also featured in the ending credits :(