As if MP3, OGG, WMA, AAC, DivX, and FM radio support wasn't enough, this Turbolinux Wizpy player comes pre-installed with Linux. The OS, Turbolinux FUJI, has Firefox, Thunderbird, and Skype, which makes it easy to just plug the player into any machine and boot directly to Linux.
The player weighs just 2.1 ounces, and launches in Japan in February. Of course, there's no stopping any Linux user from loading their flavor of linux on any USB-capable MP3 player, including the iPod. So maybe this Wizpy isn't as useful as they'd have you believe.