I could really do with some people to test the darn things! All you'd need to do is play some of the features in your home set-top DVD player - I'm not expecting you to watch everything, given that's about 7 hours of content.
Particularly, if you have an NTSC-only DVD player, that would be awesome.
Comment here and I'll get a DVD out to you if you're in the UK, or figure something out if you're elsewhere. First come, first served - ideally I want to do about 5 of these.