Top 10 April Fools' Pranks for Nerds
Wired has a list of their top 10 April Fool’s Day pranks submitted by readers. Good stuff here.
People are too reliant on some common programs that help them cheat, such as the Autocorrect feature in MS Office. Capitalize on their laziness by adding a few of your favorite "alternative" spellings. Common words like "about" or "together" work well. Even better, try subtly adjusting the spelling of your victim's name. It's so hard-wired into most people's fingers, they hardly look at it.