I have made HD films for companies who want to show them off at tradeshows but also be able to give them away to potential clients. So I do the standards DVD and add a WMV-HD file as ROM-content, but remember a DVD disc will only read at around 9meg bits a second, I make my HD files at 20000kbs so they have to copy them to a hard drive first. HD-DVD etc will read at 32mbs when it arrives, although the h.264 codec might be good enough for under 9meg (I am now rambling)