My Nomad techniqually supports RCA style AV out. Ive been wondering if it might be cool to get one of those really cheap standard def AV->USB capture things, so I could take screenshot or video while I played. Havent been sure where id post that stuff though.
The hardware can be found online for like $10. Just gotta bother to do the research on if I want to do it, and if their are any difficulties running them on GNU/Linux.