I literally wrote something identical just over a week ago; even called it sudo as well. Mine's in .NET as a little EXE. It's about 10 lines of code. I am not dissing this effort though. Far from it. Open Source is cool.
It's annoying that you still have to navigate the UAC dialog though - not sure how to get around that, without compromising security.
For those talking about right-click on the EXE... If you live in the command prompt, having to reach for the mouse just to elevate is irritating as hell.