I was more or less kidding, but i think that blu ray has the technological advantage in terms of storage space, however, i believe they're still going to use mpeg2? I think everything these days should be mpeg4, because it consumes less bandwith, and they can use it to make HDTV cheaper. In stead of using a ~22 mbit stream, they can cut it in half to 10, this means more channels and cheaper TV. Also it can be used to record more hours of video on a disc, and having tons of extra features (which i dont care about) without affecting the quality of the main movie too much.

Blu ray + mpeg4 = winner IMO,

However, i really need to read up on all those other formats, especially the three HD-DVD variants