Yeah, I just got this thing about a week ago and I must say... It's not quite as awesome as the hype led me to believe (surprise surprise!).
BUT that's not to say I'm not having fun with it! And I just thought it'd be interesting to see what everyone else liked the most about it!
Oddly enough, I've liked Portal the most, out of the whole bundle. Half Life 2 was just one long collection of sewer/collapsed building levels (minus the final few in that giant tower which were AWESOME, by the way). Half Life 2: Episode 1 seems pretty good so far, but still nothing all that amazing. I haven't gotten to Episode 2 yet, though I'm sure it'll be more of the "meh" and "purty awesome" that the others have been so far.
Team Fortress 2 has just been a massive cluster of people randomly running around and blowing each other up. BUT the art style is so awesome that I can't help but give it credit.
Portal on the other hand, despite being only a few hours long, and shallow as can be, I've had a lot of fun jerking around in ways that no mere mortal should ever be allowed to!... Nasty...
ANYWAYS my overall feelings for VALVe seems to be "slightly above average". Even the Left 4 Dead games just come across as being "okay" but not really pushing too hard to try and be super awesome. It's just weird because this company and its games have received quite a lot of praise and hype (even from Yahtzee, no less.) and yet I have such mild feelings towards them...
Eh, ah well...