What programs would you install on a brand new PC?

Most essential stuff in order:
Anti-virus
Firewall software (or Windows Firewall with Win7)
Firefox and Chrome
7-zip
Video and audio drivers
Update/install all other drivers and accessories
KLite codec pack
Winamp
YIM, MSN, and Skype

Other stuff as needed that's not in any order whatsoever:
Steam
> TF2
> CS:S
> L4D and L4D2
Maple
ijji Reactor
Vuze
Emulators
VhScrCap package / SCFH DSF (for casting)
Adobe Flash Media Encoder (for casting)
Livestream Procaster (for casting on Livestream only lol)
Photoshop
Flash
Microsoft Office
Java
ImgBurn (awesome iso->cd software that's free and easy to use)
X-Fire
DAEMON Tools
TeamViewer
Fraps
Microsoft Visual C++
Ventrilo
Teamspeak

Probably missed a few somewhere, but yeah... I sorta need quite a bit.