From the "Why didn't somebody think of this before?" files...

Taskbar Shuffle is a simple Windows utility that allows you to rearrange the order of your taskbar items by dragging and dropping. And now I'm wondering how I'm going to fill an entire post with info about Taskbar Shuffle, because there's not much more to say beyond that! It is refreshing in its simplicity. (I'm suddenly reminded of something one of my computer science professors once said about Unix programs... "Each program does only one specific thing, but it does that thing really well.")

Taskbar Shuffle is a free download and is compatible with Windows all the way back to 95. It kind of amazes me that Microsoft didn't include this functionality to begin with!