When you have nothing better to do...

Check out how much time you can waste on the interweb:

http://www.urban75.org/useless/bored.html
Just like it says on the tin - things to do when you're deadly bored.

This is quirky and interesting:
http://comedyenglish.hautetfort.com/archive/2006/12/12/sepllnig-mttaers.html

Learn Ronglish:
http://www.ronglish.com/

Fancy a change of job?
http://www.i-resign.com/uk/home/ This site isn't optimised for Firefox, however.

This is just daft:
http://www.mrceri.co.uk/software/salarytimer/