G.I.M.P.
And in the term of freeware games its prolly Wolfenstein:enemy territory :D
µTorrent.
MalwareBytes Anti-Malware (helps me out a ton at work).
Spybot S+D.
Avira AntiVir.
XFire.
utorrent, i only go to www.thepiratebay.org for my downloading needs cuz it operates in Sweden so no one gets sued.
gpuz
cpuz
xfire
coretemp
speed fan
3dmark06
winamp
VLC
utorrent.
opp forgot xchat, pidgin, and exaile