Currently Being ModeratedNov 21, 2012 5:55 AM (in response to cour2520)
I assume the hold switch is not activated? Have you tried a hard reset of the iPod after pulling it off the dock to see if that does any good? To do this, press and hold both the Select/Center and Menu buttons together long enough for the Apple logo to appear.
Currently Being ModeratedNov 23, 2012 11:02 AM (in response to cour2520)
You can work through the remaining five 5 R's of troubleshooting.
It might also be a good idea to let the iPod's battery fully drain. Then charge it back up and restore it once more in iTunes.
Otherwise, it's likely a hardware issue with the iPod's clickwheel, meaning you'll need to take or send your iPod in for service either via Apple or a third party repair service. Here is Apple's repair pricing.
Note that they don't actually repair the device, but exchange it for one of the same generation, model, and capacity. A third party service will actually replace the damaged part for a little less. Google "iPod clickwheel repair" and you should get a number of results to work with.