My iPod nano has a picture of a sad face and a triangle with an exclamation point in it on the screen and i cant get it to do anything. any suggestions?
Sounds like it's hard drive is dying. In that case, see this Apple support document.
iPod displays a sad iPod icon
You may also want to take a look at the extensive post from Mitch 751 from more potential solutions/fixes.
Retrieving data ...