How to Use the iPod Diagnostic Mode
Turn that frown upside down. Is your iPod poopy-droopy? Do you have a distressing icon on your ipod screen? Does it refuse to pump out your favorite Milli-Vanilli classic, Blame it on the Rain?
Find out what may be ailing your little musical friend by asking it: "What's wrong with you little buddy?"
Methodshop has a nice little piece on how to use the iPod's built-in diagnostic mode. Very nice site to have bookmarked. You may not need it now, but you might someday. (Knock on wood.)