Verified answer

Bleach: soi fong's Suzumebachi *its cool* or Hitsuguya's bankai Hyorinmaru

http://bleachfan1010.wetpaint.com/page/Shikai%2FBa...

naruto: rasenganshuriken (naruto)

http://naruto.wikia.com/wiki/Wind_Release:_Rasensh...

Fuuton: Rasenshuriken - Naruto Hurricane Chronicles

Giga Drill Breaker, hands down.

Runner up: Dio Brando's stand, the World, aka ZA WARUDO\

Honorable Mention: Anything Kenshiro does. (Hokuto no Ken)

Forth wave - needless

Getsuga Tenshō - bleach

Way of Destruction no. 90 Black Coffin - bleach

Spirit bomb - Dragon ball

infinite big bang shot - TTGL

giga drill breaker - TTGL

and many, many other ones.

Anything the prince from Slayers uses, like "Peace to all Men Kick"

Kamehameha. (classic from my childhood)

Rasengan (Naruto/Naruto Shippuuden)

Chidori (same as the above)

Fire Blast (Pokemon)

Criss Cross (Hajime no Ippo)

And that's as far as I can remember now. The fighting animes I watch don't really name their attacks. They just scream and kill randomly. =\

Mahoromatic. "Shining Darkness", as it can cleave anything in half or defend against any attack

the parasol of doom

so many things

Kuro's Exceed from Black God.

RASANGUN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!