The folks at
Belkin understand that you want to watch video on your iPod, and for a greater amount of time than its battery will
allow. So, they've introduced the TunePower
rechargeable battery pack. When fully charged, the TunePower will run your iPod for 8-10 hours all on its own. Also, it
ships with several attachments that will allow you to use it with any iPod model with a dock connector.
Finally, the included detachable DC/FireWire cable will charge both your iPod and the TunePower simultaneously.
Pretty cool. You can grab one for $79.99US, and it's shipping now.