The iPod's Diagnostic Mode

I didn't even now this existed. Plenty of opportunity to do/show things you don't really need to ;-)

'If you have tried trouble shooting your iPod to no avail, chances are your iPod has a hardware problem. The iPod's built-in Diagnostic Mode is a quick and easy way to determine if you have a "bad" iPod'

http://www.methodshop.com/mp3/ipodsupport/diagnosticmode/index.shtml