Yep. Unlike some people, I am still alive as of this writing. Also, I finished the single-player campaign in Portal 2. The game itself felt too short, even at more than double the length of the original; I don’t think they could have made it long enough to do it justice. The ending was suitably weird, even compared to the original. I won’t link to it here due to massive spoilers (you can find it on YouTube).
EDIT: Okay, okay. Since those last two links at Combine OverWiki also contain lots of spoilers, here is the Portal 2 ending video. But it will make absolutely no sense if you haven’t played at least through Chapter 5 of the game.