There's a massive party rockin' the world; that's right, it's the Open Source Party and you're invited! Created painstakingly in Ubuntu with GIMP. If you can name the software corresponding to all of the icons, some tech company should definitely be paying you lots of money to work for them.
As always, thanks to ~coldairbloon
for technical advise and spiritual guidance. Thanks to ~Egemen1907
for the disco ball. Thanks to Batux of crystalxp.net for the stock image of Tux. Finally, thanks to... well... the Internet for all of the OSS icons in the public domain!