im on a mac so here's my list

azureus
CS2
Dreamweaver, flash, fireworks
onyx - beautiful program fro sorting out ur system folder
VNC - the free alternative to apple remote desktop, particularly handy for me as i have 2 macs
Aperture
Audacity
Sailing clicker - use ur mobile phone as a remote for ur comp
Diskwarrior
mactheripper
handbrake
ffmpegx
google earth
ieatbrainz - for sorting out ur itunes librairy
serialbox - naughty naughty
mactracker
tinker tool
trashit
toast
VLC

all fun stuff really..... im guessing very few of u use macs tho