Congrats Randy! Great purchase indeed. I've had my Elite 70 inch since the first month they went on the market and have loved it ever since. Couple things to note here if you haven't done them already - if you have an Internet connection to the set (highly recommended), make sure to check for a firmware update, as your TV was sitting in the box for quite a while most likely. They haven't updated the software for over a year, but still good to make sure you have the latest (and likely the last) firmware for the set. Next, you may want to calibrate the Movie THX A/V Mode so that it matches the recommended settings from CNET or from others here that have put a ton of time in to tweaking it well. Outside of that, if you're really wanting it to be as close to perfect as possible, you could enlist someone to unlock and use the ISF Day and ISF Night modes, designed for more granular calibrations specific to your actual display. But in any case, I had to smile when I saw your note about watching Avatar. My wife raves about that one too, and it was one of the first times we realized how special this set truly is.
I'm not a huge 3D buff, but I do like pulling out the IMAX Space Shuttle 3D Bluray, Avatar, Tron, and a few others just to see how good 3D really can be. Enjoy the Elite set Randy, we are all very fortunate to own these beauties. For now anyway, I feel no need to try and "up" my viewing experience.