Daigo Umehara vs Justin Wong, the EVO finals, 2004. It's almost universally accepted as the single greatest moment in competitive gaming history.

And it's now been immortalised forever. In an anime.

This clip is from Acchi Kocchi, apparently. If you're short on time/memory and need to see the original, here it is.

EVO moment 37 immortalized in anime form [Capcom]