Having pre-ordered The Orange Box on Steam pretty much for HL2: Episode 2 alone, I was pleased to see all the other stuff that came with it even as a preorder. I have to admit the TF2 beta isn't floating my boat, particularly in comparison to the exquisite objective based gameplay of Quake Wars or the finely honed Halo 3. But getting it is still a nice benefit.
Peggle Extreme, however, was an unexpected surprise. I'd been resisting the lures of Peggle despite hearing many positive things about it... figuring I'd just wait for the inevitable Xbox Live Arcade conversion. Well, this week's lack of any new games at all on XBLA, much less the Puzzle Quest I am pining away for, made me realize that waiting was a bit silly. Turns out Peggle Extreme is very addictive and now I imagine I'll get the full version of it. I think this is a really clever way of doing demo content -- pulled down automatically with the game and rebranded to match the game it is being partnered with.
Of course, not even Peggle is enough to keep me away from Halo 3 for long...