Giacomorilla is an icon set based on the original Gorilla icon set for Linux from Jakub 'Jimmac' Steiner. You can go to his website here http://jimmac.musichall.cz
This reimagining uses elements from the Gorilla icon set and adds new design work to the mix with an aim of providing a complete Windows icon replacement set and replacement application icons. These shall all be in the spirit of the Gorilla design.
All of the icons on this site have been released as downloads at gfxoasis and also be found here http://www.gfxoasis.com in the forums. If you sign up to the forum, you'll be able to search for them as they are all tagged 'giacomorilla'.