What the... damn it people, play them all! You won't get the full Sam Fisher experience otherwise!
OT: Chaos Theory. Followed by Pandora Tomorrow. Double Agent was nice and all, but the third game was simply magnificent.
Got the demo, thought I'd found heaven, played it to death, got the game, found out it had
a)Cooperative Levels
b)Multiplayer
and decided heaven couldn't be this cool, this had necks to break & blood to spill.
Haven't played Conviction yet, but I've heard it's more shooty than stealthy, and takes about 15 minutes to beat.