Fuck HDDVD and BlueRay. Holographic discs holding hundreds of GB are already avaliable. You can buy them today.
They only reason they are squabbiling over these puny 25-30GB dics is because they can control them and the players, thus they can control you. What you watch when you watch where you watch and how much you pay to watch it each and every time. Screw em both, I want my holographic disc.