First, download EphPod here. Install it and run. Select the drive that corresponds to your iPod, then double-click “Songs” when the main screen comes up. This will bring up a familiar list of all music on the iPod. Select all the music, then right-click and select Copy Songs to Directory. Drop them wherever you’d like on your PC.
Note that EphPod may not work with all iPod hardware, but I gave it a spin today and had no trouble with it. It does not currently appear to work with videos or podcasts, only music. EphPod will transfer about 2,000 songs an hour.
There are other methods but none are as easy as EphPod. Cnet offers a tutorial on how to do it within Windows, sans extra software, here. The good news: That method will probably work with videos as well.
(Via Yahoo! Tech)