I am always on the lookout for cool and functional freebie programs.
One good program I have come across is called Switcher
. Switcher is an Alt+Tab replacement program that gives you great and graphical flexibility over that task switching function. See below:
This is for Windows Vista only. In fact, the website will tell you that you need to be running Aero for it to work; however, by my experience, it works well while running WindowBlinds, too.
If you would like to try it out, here's the link: http://insentient.net/