Good lord, now I'm really satisfied that I chose for the ATI Radeon, and manage to get this game so soon for free. The way that the storyline is, indeed, incredibly good, and the little incidents near the start already brought me right into the game. That little thing at the end at Dr. Kleiner's lab was just awesome, that really put me straight in the middle of things.
Currently going through the Water Canal m'self, and I understand that I'm getting close to the end of the sewers. Up to now, I really have to say that I love the boat scene, there are quite a few OOOOHs and AAAAAHs in there that I'm not gonna mention more about, don't wanna spoil it. Can't wait to reach the lab, and find out more as to what is going on.
However, the game continues to crash every 40 minutes or so which is the only thing that's aggravating me so far. Other than that, the game is amazing, and I'm definately looking forward to how things will develop. If Doom 3 was a horror movie, then Half Life 2 is a particularly good ol' action movie.
The answer is maybe.