I'm surprised nobody has mentioned developing and hacking the crap out of view code in order to support Internet Explorer 6. It's a waste of time. People who use IE6 already see the internet as a horrible experience, so trying to make your own product or webpage work is just a big waste of time.

Sysadmin work is also really horrible, though I would say it's unneeded these days with the help of services like Heroku.