Ages ago I was at a friends house. I was playing on the PS2 and he was on his laptop playing an RTS which looking back I think must have been Total Annihilation or something very silimar. I started watching him play out of the corner of my eye and became intrigued, asking questions about what the game played like etc. A little while later he went off to to do something or other and left me in charge of the game, telling me I could just play around with the map he was playing for a while. I basically just faffed about, trying to figure out the control scheme, resource system and such. Eventually I got around to building a small fleet of air craft - a horde of bombers, some fighter escorts and a handful of unarmed scout planes. I sent in the scout planes first to see if I could find a good spot to focus my attack, and as I did my friend returned and pointed out that they were likely to get instantly wiped out by the opponent AIs significant air defences.
Sure enough as soon as they reached the enemies defense line the helpless little planes came under an overhwhelming barrage of ordnance, wiping out all but one. That one plucky little scout, critically damaged and all alone zips past the defenses and right into the heart of the enemies base where it encountered some sort of enormous mecha thing bristling with numerous threatening weapons, the kind that could make the entire American millitary feel inadequate. The mecha turns. It opens fire, and misses spectacularly. It's shots streak past the scout plant and detonate in the middle of the enemies production facilities and power plants. There is an enormous explosion. The poor laptop freezes for a moment, the fps drops to a snails pace and slowly returns to normal over the course of several minutes. As the dust clears and the laptop is once again able to function effectively my eyes go wide, and my friends eyes go wider still as we see that half of what had once been a sprawling tightly packed base spanning a fifth of the entire map was gone.
We burst into laughter, and my friend proffesses that he has never seen anything like that happen before, and after a few hours of trying to recreate it, he decides that he'll likely never see such a thing again.