I just saw a post this morning about Sean Lyndersay's new Sidebar gadget called the "WebSlice Viewer Gadget." This brilliant little creation brings IE8's WebSlices (bits of web content that you can access from the new IE8 Favorites Bar) right to your desktop via a simple Vista Sidebar gadget.
The gadget, currently in alpha (you've been warned!), requires Vista (unknown if x64 supported, but let us know), IE8, and a web page that has some WebSlices. Each instance of the WebSlice Viewer shows only one WebSlice, so you will need to open multiple gadgets to show multiple views.
You can download the WebSlice gadget from Sean's SkyDrive.