I'm thinking of picking up an TV but I wanted to know: I'm leaning toward just getting the 40GB model because I don't think I would use it for much other than renting. So how much space does a movie take up (both HD and standard)? Is there a standard "1 min. of HD video = 1MB" or whatever that I can keep in mind? My TV (Panasonic 50" plasma) has two HDMI inputs, each of which are currently being used (one by the Dish, one by the PS3). Can I get a splitter or something or I should just use component cables? Any answers/advice is appreciated. Thanks.