"Although I've seen smaller embedded Linux systems than the Hauppage MediaMVP, it is the smallest non-handheld, and it's one of the least expensive Linux systems out there. The MediaMVP is similar in some ways to the TiVo: it's intended to be a pure appliance, performing only specified functions. Unlike the TiVo, it doesn't make a significant effort to prevent users from loading their own software, and sure enough, users have done just that...
"This article looks at the 'standard' install provided by Hauppage and also looks at the MediaMVP Media Center (MVPMC) project, which is developing a custom user environment for the system..."