Anyone remember how back in OS 9 you could collapse a window into its own title bar? Well, that functionality can be had in Windows. Winroll is an application that allows you to obtain the same functionality that you used to have in OS 9. To quote the Winroll site:
Make a window roll into its title bar, send it to the back or make it stay on top. Minimize, maximize or close all visible windows, including minimizing to the tray area. Make a window translucent on Windows 2000 or above. WinRoll is lovingly hand-crafted in 100% pure assembly language to give the fastest response and the smallest memory footprint. WinRoll is proudly a FREEWARE and OPEN SOURCE application.