Madotate is an awesome windows manipulation tool for XP. The software footprint is less than a meg and it behaves itself very well. The program adds a button to the window bar that allows you to rotate your windows 60 to 90 degrees and make them semi transparent. You can also assign keyboard macros to rotate the currently selected window or windows open on your desktop.
This program has helped convince me that 3D capabilities are a requirement for modern desktops not just a toy.
