I dont' know about regular Ipods but what I do with my Treo is rip movies/tv shows into avi format to playback. Now if there's a connector (similar to ipod) that allows that to stream directly into the NAV screen, that would be money. I mean, you can only watch the same DVDs so many times.

Can Ipod videos be streamed to the NAV screen in any way? That would be a start.

Perhaps the alternative is to use a DVD-RW (so you can swap shows in and out) but would the DVD-changer even play those?