SUPERMAN vs. Son Goku...
The guys who brought you other Death Battles, including Rainbow Dash VS Starscream, have now taken on one of the longest-standing and most hotly debated "Ho'od Win" questions of all time: Son Goku VS Superman, the Man of Steel.
And it is AWESOMELY well done. I also agree with the overall outcome (with some caveats, below). It of course won't stop the arguments.
( Spoilery and geeky discussion below )