I would love to have Spielberg films on HD, I think Back to the Future would look amazing in hi def, but I'll wait till Universal come to their sense and cave
For the rest of their titles... so far the only thing I can think of (and Im still boycotting) is the Bourne Trilogy this xmas. It will the the Blu-ray killer from the HD DVD camp lol. But other than that, there hasnt been a movie that I REALLY want to have out.