Get a fantastic web browser, and set a Guinness World Record
Writing about web page http://www.spreadfirefox.com/en-US/worldrecord/
If you download Firefox 3 within its first 24 hours (the release date hasn't been announced yet) then you could help set the Guinness World Record for the most software downloads in 24 hours.
Full details of the attempt can be found at the link above. It's important to note that it has to be a proper download; updates apparently won't count.
Sounds like a laugh...