First F.E.A.R game is worth a try.
I agree with this. Fear 1 on PC is probably the definitive Fear game - while the others are still good as shooters, they do stray from the 'psychological horror' aspect that made the first game so daunting
Black Mesa is also definitely worth a try since it's free, as the above poster mentioned. If you haven't played any Half Lifes, you might as well get them all (1,2,Episode 1, Episode 2) since they are cheap and will likely run on lower-end computers, unless your laptop is very severely low-specced.
Regarding Metro 2033 - it won't run on your laptop, I can almost guarantee that. If it actually does, it'll won't be playable.
Regarding Borderlands 2 - you should play it regardless of your reservations. Fantastic game. Clocked more hours on that than any game in recent history that I've played
<message edited by Satanas on Wednesday, November 28, 2012 1:19 AM>