I picked up a Toshiba 57HDX82 about a month ago, and so far it seems pretty good. I watch a lot of hockey, so the games look fairly decent on the bigger screen! (I moved up from a 27" regular TV.) My question is... what input sources does a professional calibration improve? The component inputs for DVD are a given, but what about the other lower quality inputs like the cable, s-video, composite and DVI? I'm viewing satellite (Bell ExpressVu in Canada) via S-Video as my TV programming. I also use the S-Video connector (and occasionally composite connector) for video games (ie. Dreamcast). Will ALL my sources look better, or just mainly the DVD on the composite connectors? Will the difference be night and day, or just a slight noticeable improvement?