I really enjoyed Portal, and finally got my cake!

It's an innovative and entertaining way to work physics puzzles, which was one of my favorite parts of HL2. After running through the standard "chambers," I can now go back and hear the game developer's comments and do the bonus levels. The editors of Maximum PC say Portal is the best part of Orange Box, although I've just started HL2 Ep2 today and can't comment on it yet.

I can't believe there are so many YouTube videos demonstrating the fastest way through the chambers and the end credits. Now I can't get that damn song out of my head (and why is it I can't turn off those clock radios?)

Nice production Valve, it's off to squishing more grubs...
Mmmmm...health bits....