I just picked up one of these and I'm very pleased with it's features and quality. In addition to having mp3, video, photo, voice recorder and FM radio functions it also supports the reading of .txt files. You can change pages, add bookmarks and change the font size (16 or 20). It comes in 1, 2 and 4GB models. I bought the 4GB model and it set me back around $200, although I think they're reducing prices shortly.
Review 2 with video