Last night I spent about 2.5 hours touching up the calibration on my 65" TV. Very few people do this, mostly because they don't know they can and others because they don't care. I can't overstate how important this is to enjoyment of your TV. There are three important parts. First is fixing geometry (so a circle is round), then fixing the convergence (so a white line is white and not a red, blue and green line close to eachother) and overscan (so the all of the picture can be seen) and lastly fixing the colors (so red is red and not orange). When this is first done some people don't notice it, but if it is done and watched for a period of time I guarantee it will be noticed if undone.
I learned some of how to do this from sites like AVS Forum and Home Theater Spot, a great deal of it I learned when I had a professional ISF calibrator come in work on my TV. Unfortunately not all ISF people are the same, however I can personally recommend Eliab from AVICAL especially on Toshiba brand TV's.
I ran into some oddities while calibrating the HDTV resolution on my TV so I posted to Home Theater Forum in hopes the Eliab or some other more knowledgeable person than I will respond.
If you buy a $1000 and up TV, spend the time (and possibly money) to make it work like one.
your 3 important parts appear to be 4.