Sorry about crap quality, normally my resolution is 1366x786
Anyways, a few quick descriptions of the icons on the toolbar at the top from the left onwards;
-The first five icons are just folders I frequently use
-Cube 2: Sauerbraten; one of my Open Source FPS'
-Blood Frontier; another FPS that uses the same engine as the above
-AssaultCube; yet another FPS, which uses the predecessor engine to the above 2
-Cube Server Lister; tool for viewing servers in the above games
-Visual Boy Advance; GB emulator
-VirtualNES; FC/NES emulator
-ZSNES; SNES emulator
-FireFox; I'm sure everyone here knows what this is
-AVG (Free Edition); free anti-virus
-Mumble; Open Source voice chat client, used for my FPS'
-Nettalk; IRC client
-MSN/Windows Live Messenger
-Media Coder; transcodes dozens of audio and video formats, very useful, and free, I often use this to make ogg's to play ingame for my FPS', among other things
-Windows Media Player
-The never-used iTunes
-OpenOffice.org 3; Open Source equivlant of Microsoft Office