There is a pretty active thread with lots of discussion for that particular model on CNet's own HDTV Settings Forum. You can join in here:
Hi, does anyone know the best calabration for the 46" samsung 6000 series led tv? Is it worth paying The Geek Squad $300 to calibrate my tv? Right now I have SD signal and I'm getting the Dish HD at the end of the week but my picture looks good, ( a little dark) but it also looks alittle blurry. I don't know if that is because it is receiving only SD signal right now. Does the calabration only show up best when it is HD or will it also look better with SD channels also? My TV is in a highly lit area during the daytime and of course very dark at night, if that matters at all.