Vern is also Virtual Environment Resource Navigator, a shareware virtual desktop utility from One Guy Coding. Along with Tera Term Pro, it's the only thing keeping me from abandoning Windows NT entirely. It's available at http://www.oneguycoding.com/vern/. It supports multiple monitors, is skinnable, and dozens of virtual desktops. Probably not the only thing for NT that does this, but certainly the prettiest way of doing it. It also lets me use my mouse even less than before, since the hotkeys for window switching are easier to use with 30+ windows than ALT-TAB and the other default task switching keys.

All told, it's one of the only Windows apps written by a guy with the right idea about Windows apps.