This gets asked every so often. I think that I even asked it a while ago.
The experts will have the better answers, but my recollection is that proper TV calibration depends on the environment of the TV. You mentioned receivers, but one of the best new features of receivers (IMO) is the auto set-up that is meant to calibrate your audio system in your listening environment for your listening positions. Perhaps someday TVs will come with auto calibration systems. You can buy them (like the Spyder systems), but they aren't really inexpensive.