Here's the IGN Review
IGN: The Orange Box Review
Looks like you get alot of bang for your buck with this.
I wasn't quite sure what was up with the expansions ( Story Wise ) being that I beat Half-Life 2 on the OG XBOX 2 years ago but now I get it.

I can't wait to see how the graphics and especially the sound effects hold up after 2 years. Half-Life 2 was one of the best games on the OG XboX
Team Fortress offers up 6 maps with 9 different playable characters, but has no Team Deathmatch.
I'd love to get this game, but my gaming time has been extremely limited these days.