i have an xbox and it has the high def games mostly in 480p, but i just got the new enter the matrix game and its in 1080i and oh my god its great but my question is what movies are high def i dont have any that say they are except blackhawk down, but it doesnt show up on my screen as high def

DVD is not a high-def format. HD-DVD is on the way, but it's not here yet. Any DVD you have that says the movie was mastered in high-def, that master was downconverted to standard definition 480i.