Great minds think alike it seems. Over the past few months Stardock has been working on a host of new effects for WindowFX 2.1. One of the new effects is controlling how windows are displayed when you move them. Now there's a whole set of different effects to choose from when you move a window. More importantly, on a decent video card (such as the ATI Radeon with the new drivers just released) having these effects are completely hardware accelerated so you don't take a big speed hit using them.
Check out this video to see it in action: https://www.stardock.com/video/winfx21.wmv (or with Quicktime https://www.stardock.com/products/windowfx/wfx_video.html)
WindowFX 2.1 is now available on Object Desktop. If you don't have Object Desktop, you can get it at http://www.objectdesktop.com