Back when I was traveling all around the world and teaching scripting workshops to customers, I was constantly changing the display resolution on my laptop. Generally, when connecting to the overhead projector (or beamer as it was called in Germany) you need to select a lower resolution than the laptop is designed to run at. This ensures the fonts will be viewable from the back of the room.
While a low resolution (such as 800x600) looks good from the back of the room, it does not look good up close on the laptop. In fact, many Windows applications are unusable at such a low resolution due to the size of the dialog boxes and problems with navigating around the screen. I always wanted a script I could run when I started the day, and a script to run at the end of the day … or during lunch if I wished to check email. Now such a script exists. Check out today's Hey Scripting Guy! blog for an excellent guest article written by Andy Schneider for more information.