Examples:
-The slow 'n' snap. This would be those times when a character may have, say, a sword or the such, and as they're dueling, they suddenly pull in their weapon, having it move slowly, then slash slash out as they move (I'm not referring to the whole "Samurai finisher" thing). I think it's done in the faster paced mech-styles and some sword-fighting fantasy.
-Bloody cough. Not because of the violence, but there's just something about it, like the way the certain character has been fighting, only to be suddenly struck down. I typically mean when like a character is struck, and they're stuck in mid-air, going all slow-motion, they're eyes white in surprise/fear, and their mouth opens, spewing blood out.
-Bajillion shots from afar (perspective). Mech stuff is probably a good example. This is when a character suddenly flies off into the distance, causing them to appear really tiny, then either all these spots open on their body or they just fire like crazy, causing a "bajillion" shots to fly out, then in towards the opponent.
Another is the single-but-unbeliavably-big-lazer-thingy-from-the-mouth-or-cannon-etc.. XD
-Rapid punches. Yes, I'm thinking about Luffy's Gomu Gomu Gattling and Storm. Just seeing all these hits go everywhere so quickly just seems awesome to me.
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-Exploding ditch-maker. Basically, this is either when a character hits the ground or throws/slams another character into the earth at high speeds, creating this long ditch mark in a flash of explosive debris.