I'm using the THX optimiser on a 32" Panasonic PL1 but seem to be having a bit of trouble.. Brightness Am I right in saying this will vary depending on the amount of light in the room because if I calibrate in a lit room then watch a film in the dark the black level is way off and I need to lower the brightness quite a bit. Problem is I usually game in a lit room and watch films in a dark room. Contrast The THX thingy shows a large white cube split into 8 shades of white with 4 distinct cubes. It tells me to adjust the contrast until I lose definition between the 4 shades... even at v high contrast i dont seem to lose much definition, only really noticeable going from minimum to absolute maximum. I also notice video games look washed out if I set the contrast based on films. Games tend to look better with a higher setting. Sharpness Everywhere advises to lower this right down or even to zero which looks fine for dvd's but makes regular digital tv look massively soft. I'm coming to the conclusion I can only calibrate properly for one video source in one lighting condition... any advice whould be much apreciated. Cheers Dom.