Sorry for the bad grammer but Entourage was coming on and I had to dash.
The THX Optimode does indeed compensate individually for any given movie.
For those that don't know what THX's Optimode is about, it is suppose to be a perfect audio/video Optimizer in it's raw form that is then subjected to the same transfer process to DVD along with the movie.
The theory being that when you adjust your TV with it for that DVD it will correct for the DVD transfer process and give you a movie viewing experience as close to the intended source material as possible.
If you ask me that's fairly bullsh_t worthy. In reality if the people producing the DVD don't screw up (which if it's really being supervised by THX technicians in order to get its certification) there should be little to no difference from DVD to DVD.
I think anyone who has had their home theater professionally cailbrate would strongly disagree with the principle of Optimode. Besides, I have seen enough really bad THX certified movies to know that it's once again Lucas bleeding the system because it's easier than making a good movie.