Dave's Quick Search Deskbar
If you consider yourself a power user, get it.
"Dave's Quick Search Deskbar is a tiny textbox that Dave Bau designed for search hounds with weary mouse-fingers. Unlike the Google Toolbar, this little deskbar lets you launch searches without starting a web browser first, directly from your Windows Explorer Taskbar."
I tried it out a year ago, but didn't take the time to learn enough about it. It probably wasn't as flexible then as well. There is a bit of learning to get up to speed (not much, but a little). Now I find myself using it to launch applications and other stuff that I used to have to do all kinds of mouse-clicking to do. Some examples of aliases that I've configured:
Oh, and the [WindowsKey][S] key combo jumps you to the search bar.
If you have any cool aliases, please share them in the comments below or email or message me. I'm working on a couple of custom searches now - including Canada Post package tracking.