Originally Posted by BigCactus
It's unanimous I guess, bc2. Maybe if I was on a console forum it would be a different outcome.
Even a different PC forum would yield different results. I've yet to find another site as devoted to BC2 as OCN, and yet our servers sit empty most of the time.
I personally love it, but it's definitely not the end all, be all that some make it out to be.
And regarding your original question (and poll), you can't group games like Metro 2033 and Fallout 3/NV into the same category as Call of Duty or Battlefield (btw, where's BF2?); even Left 4 Dead is pushing it. The genre "first-person shooter game" isn't a genre, rather a way with interacting with the game. For example, I voted for Crysis right now, but I based myself on replayability, since I value that in games highly. There's at least six other games in your list that I would prefer if I were looking for a different type of game, whether that be multiplayer or RPG or just a fun game in general.
/games to add if you insist on being all-encompassing: Borderlands, Grand Theft Auto series, Mirror's Edge, Amnesia, Brothers in Arms series, Call of Duty 4, Day of Defeat, Max Payne, Red Faction series, Portal, STALKER series
^that's just from my gamelist on Steam. See my point? None of those games are similar to any of the others at all.