There are at least 3 bands called Gorilla:

1) Rockabilly/psychobilly trio from Hungary, made up of singer/guitar player Pete Gorilla, bass player Tom Alien, and drummer Tubush. Gorilla to date have released three albums: 'Genetic Joke,' 'Too Much For Your Heart,' and 'Flamenco Death.'

Pete has a MySpace page at http://www.myspace.com/petegorilla
Tom's MySpace is http://www.myspace.com/tomalien

2) Gorilla were also a UK band formed in 1995 by vocalist John Whitby, guitarist Andy Gatford and drummer Neil Cooper (now with Therapy?), of disbanded Derby-based progressive metal band The Beyond. The lineup was completed by David Petty on bass and John Lingard on violin. They split in 1998, having released just two E.P.s - Extended Play and Shutdown and two singles - Who Wants To Save The World Anyway and Outside.

Their MySpace is http://www.myspace.com/shutdowngorilla
More information can be found at http://en.wikipedia.org/wiki/The_Beyond_%28band%29

3) There is also a UK stoner rock band called Gorilla. The free mp3 here and the photo belong to this band. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.