Currently Being ModeratedJul 29, 2013 6:41 AM (in response to NOVIFTW)
Are you sure it is just not static electricity discharge? When charging the iPod will be grounded when otherwise it is not.
Are connect to a computer or charger?
Also have you tried a different cable?
Id could be the charging source or cable.
If it does it will all sources and cable then
Make an appointment at the Genius Bar of an Apple store.
You also may want to make the appointment otherwise.