Run as different user, in Windows 7

Here's a little gem from a friend of mine. In Windows 7 we all know how to right click and "Run as administrator". But how do you run a program as a different user, perhaps as an administrator on a different domain? The answer: when you Shift + Right click, you get an additional "Run as different user" option.

Thanks, Microsoft, for hiding stuff from us. You really know all about usability.