My favorite part out of the Portal series occurs in Portal 2.
Before playing on the PC, I was a console gamer. My brother got Portal 2 on his birthday so we played Portal 2 (obviously) after playing (I think) halfway through the game there was the chapter called "The Part Where He Kills You"...
If these references actually mean something in the Valve HQ, a new Source Engine and Half-Life, then this big silence from Valve would most certainly be broken.
The Mission Improbable Half-Life 2 Mod is AWESOME! I just finished the first half and I am now on the second half and I am already blown away by the way the story progresses, the scenery, and the challenge it brings. Thanks for this mod!