Just becuase I keep needing to do this:
To reset an iPod with a Click Wheel, including:

- iPod nano (3rd generation)
 - iPod classic
 - iPod (5th generation)
 - iPod nano (2nd generation)
 - iPod nano
 - iPod with color display (iPod photo)
 - iPod (Click Wheel)
 - iPod mini
 - iPod mini (2nd generation)
 
- Toggle the Hold switch on and off. (Slide it to Hold, then turn it off again.)
 - Press and hold the Menu and Center (Select) buttons simultaneously until the Apple logo appears, about 6 to 8 seconds. You may need to repeat this step.
 
Full article is available here: http://support.apple.com/kb/HT1320