What was your favorite moment in the Hitman series? Mine was in Hitman Silent Assassin, where it is the second mission, and you are assassinating the Russian commander/leader with the orders and info about him coming in slowly, where you slowly become aware of the target as the information is fed to you.
Then you pick the bastard off with your sniper rifle.
Either that or in the Curtains Down level in Blood Money when the Opera comes to the execution scene, you take out your rifle, prepare it, aim at the Opera tenors head, wait for the correct time, then fire. Then Apocalypse plays, you put your rifle away, walk out in the chaos and confusion, and feel like a boss.