Flash vs Berserker starcraft grand finale. They do up to 400 actions per minute, implementing several battle/resource strategies at once. Such as building a proxy base, while haggling the opponents resources with an SCV, while laying down mines, while flanking their other proxy base all at the same time.
Of course i never win an RTS by "spamming the unit button", because that just means you don't know how to manage your resources, its always about strategy and micro. I've beaten people in Starcraft by building photon cannons around their base at the start of the game so they can't expand, thus that means i can take all the resources. I've beaten tanks with a single infantry company with good micro in Company of Heroes. Noobs think you can just win with the biggest army, well try and play cossacks (which has 8000 pop limit per person). With the right formation and strategy you can beat a 4000 man army with just 300.
Heres flash v berserker [game 1]http://www.gomtv.net/classics3/vod/996
The game starts half way through. There's 5 games in total.