Software I should install

Remember me?
Well, long story - but basically, got a Mac, loved it, wanted to play Sanctum, bought Windows and I now dual boot.

I'll still be using OSX as my development platform and for most fun stuff, but I'd like to keep a nice Windows system as well: so here's the question; what should I install. I'll admit I haven't used Windows in a few years, so I'm a little rusty.

Here's what I've already got:

• 7zip
• FileZilla
• Evernote
• Steam
• Google Chrome
• Notepad++
• xChat
• Skype
• iTunes
• Photoshop

So, uh, that's what I usually use: but what else should I have? I'm already planning the whole Live suit as well as buying office 2010. Oh, and let's not forget good ol' Security Essentials.
All those little tips, tricks and tweaks you'd usually do -- throw them at me!

Thanks

Hi Fire cat.

Thats a nice list. I'm not sure what I could add that wouldn't be overkill or redundant to what you already have in the list. Thats especially the case since Windows is not your main OS.

On a side note:
It's good to hear from you again.

I find Secunia PSI useful for keeping apps and MS patches up to date.
https://secunia.com/products/consumer/psi/

Oh and it's Free.

CCleaner
VLC