The Walrus Punch, one of the most satisfying ults in any MOBA I've played. While it's simply a single-target knockup with tons of damage, it is one of the most hilariously executed skills I have seen. Sorry 
, A&B is nowhere near as cool as the Walrus Punch
N30NP4NDA3 votesThis makes me want to go play some DotA
Zarkkast2 votesSo... Shoryuken?
Epic Murph1 votesExactly Shoryuken
EDIT: Actually, one of his quotes while ulting is "Falcon Punch" XP
Mhihnj1 votespawnch
ftfy
Onegarion1 votesHell I want to be able to form into a Giant snowball. That seems like a lot of fun.
N30NP4NDA2 votesAnd your allies can click it to get in ;)
Epic Murph1 voteswish they would give that to nunu, that would work so well with his ult :/
MLDzXnRRR1 votesThe snowball is way more interesting... Also we already have VI, even if she is a port of the spirit breaker.
Cerebral Absence1 votesI'd love to see Rubick's Ult :3 I mean - who doesn't want to steal other's spells?
SylvanasWrunner1 votesCan we have Finger of Death here in League? Just so we can burn those CM spammers into crisp :P
Mhihnj1 votesfalcon pawnch walrus pawnch i see a trend here
SouL1ess1 votesNo 6 Rapier Walrus Punch Demonstration?
No Silver Edge + Blink Dagger "Hit-and-run" Demonstration?
#NotWorth