You know, it funny. I liked Doom 3 - but even if I didn't, it would be hard to call it overrated because you don't hear that much positivity about it anymore.
HL2....eh.....people made this game out like the second coming, and to be blunt, it's rather bland. Terribly dull driving bits, one interesting weapon and the rest are just flat out blase, and a plot that just isn't very interesting. Not like the AI is spectacular either. All I can guess is that the newness of the grav gun enthralled people, and now that it's no longer new, it just can't grip me the way it did them.