I had my video iPod for months before I took the time to upload my favorite photos onto it. Once I did, I realized how much I had been missing. I figure, if you have an iPod with a color display, your music player can do double-duty as an image viewer and you might as well use it!
If you're using a Mac-based iPod, you can view JPEG, TIFF, JPG 2000, GIF, PICT, PNG, SGI, and BMP images on your iPod. On a Windows-based iPod, you can view JPEG, TIFF, GIF, PNG, and BMP images. For tips on how to make it work, just read more
To get photos and images from your computer onto your iPod, you can either sync a folder of images on your computer with iPod, or sync images from software. On a Mac, you can sync from iPhoto 4.0.3 or later; on Windows, you can sync from Adobe Photoshop Album 2.0 or later, or Adobe Photoshop Elements 3.0 or later. All you need is a little help from iTunes to do the deed.