Vista Trial Time extension

Just noticed that Coding Horror has a way of extending the 30 day trial for Vista to 120 days, and what's better is that it's an officialy supported Microsoft way of doing it.

Fire Up a command prompt as an administrator
Type slmgr -rearm into the command line

Voila another 30 days on your trial, and you can do it 3 times, so 120 days trial.