For the fist pump straight in the air accompanied by a YES! or FUCKIN RIGHT etc, for me is similar to Lakon there. Any boss battle where there is but one party member left, who is in the yellow, and deals the killing blow.
For the lesser, yes! moments, where no fist pump is needed, or you make a fist and pull in towards your body; same thing except for any normal battle. I remember a lot of those moments from Final Fantasy I and the monsters that could "kill" your party members by petrifying them. Zombies, I think..or some other undead creature. Oh ... cocktrices, those were the bitches.
So now is the time for Translanka to come in and complain about how this thread is similar to some other thread.