Parallels and Think : Great Combination
I am using Parallels for some time now for running windows under an iMac. Mostly I use it full screen mode. Whenever we leave fullscreen and get back to OSX, Parallels resizes the desktop. The resulting screen adjustment is really ugly.
Enter Think. Think is a small and beautiful application that stretches a blank (or a selected color) screen below your active application. In effect, the current application is highlighted. It comes along with a semi-transparent control panel. Now, the control panel is available when Parallels is running in the full screen mode. Switching to a Mac application? Use the control panel and select the running application.
If only Think supports using a wallpaper now.