Naruto's unbelievable kunai skills.

[LBeezy]

It's not unbelievable at all really.. since a kunai is so small and close to your hand, as long as you're skilled in Taijutsu/hand to hand combat, you should be pretty decent at using it.

For example, Rock Lee, Gai, Kakashi, etc. can all replicate the same kunai feats you showed from Naruto.