His name is Uzeyer Novruzov. He's the Ladder Dancer. Give him a ladder and a tune, and he'll dance up a storm.
Novruzov recently appeared on America's Got Talent and danced to Al Hirt's Green Hornet theme. His act begins at the 1:44 mark, but I suggest watching the entire video because his awkward pre-performance shtick is hilarious.
-via Miss Cellania