What's THIS For...!

is the second studio album by English post-punk band Killing Joke, released in June 1981 by E.G. via Polydor Records.

In a 5 out 5 star review, John Gill of Sounds wrote: "it's an album of incomparable verve, energy and aggression, and you might even risk a dalliance with the slumming glamour of its violence.

[12] A significant contemporary dissent came from Melody Maker, whose Adam Sweeting called the album "a tired and very noisy collection of ripoffs", and deemed the whole effort "unlistenable ... apart from the spaces between the tracks".

48 on his list of "The 50 Best Post-Punk Albums", noting that "the real genius here is the human emotion that comes through such spare efficiency".

[16][17] All tracks are written by Killing Joke (Jaz Coleman, Paul Ferguson, Martin Glover and Geordie Walker)