I find Dopus for Windows truly excellent. In fact it was and still is one of the reasons that I can live with working in windows. After I installed Dopus I haven't used Explorer or the hassle of going through "My Computer" to manage files. Just a double-click on the desktop and I've got a dual-lister Dopus window open with all it's power at my fingertips. It's very flexible, configurable and makes file management very easy. Explorer doesn't even come near when it comes to flexibility.
In my book it's a must have for people using Windows, just make sure you take some time to configure it. Nifty features like the great built-in image-viewer the built-in FTP support etc makes life with Windows so much easier.
