I doubt this is what your looking for but on my curve I can watch videos when using my usb cable and media player classic.
Probably because berry shows up as a usb hard drive and you're just playing the media files off of it into media player. Guess you could use that solution on a pc with a TV-Out card.
Well I gues you could if you really wanted to but I can only assume the resolution would be less than desireable unless your using a high end GPU. I do something kinda like this but its not a practical solution really.