1. Opera
2 . VLC (it plays everything
)
3. 7-Zip
4. JDownloader
5. Winamp(because of the plugins and small memory footprint with Winamp2 skins)
6. Notepadd++
7. NetBeans
8. ImgBurn
9. PowerIso(because of the VirtualDrive manager)
10. Bittorrent/uTorrent
Also, but less of the "couldn't live without" thing
: DVD Decrytper, vStrip, Avidemux, blender, DVDLab, PS,
SmartRipper, SubRip, WinRAR, MS Office suite...and I think thats all