I'm a Sniper (in games), the most satisfying thing in the [gaming] world, is a sniping stand off.
It used to happen quite often in the older generation of games, where Snipers where few and few between, a CTF match where the snipers from either team decide to screw defending the flag or base and go for each others blood, its like the fight with "the End", only a real life opponent.
edit: because of the secondary weapons a sniper normally has is pretty poor unless at point blank range you'd get both snipers trying to avoid battle at all cost's just to get into a sniping duel. Going so far as to allow a flag carrying opponent to run past providing it doesn't give away position.