After my initial post I was flipping channels on my TV and decided that such an advocacy group is needed. I'm a widescreen fanatic when it comes to movies and it's annoying as heck when the movie channels air the fullscreen versions vs the widescreen versions. Even on PPV it's extremely rare to find the widescreen versions.
What's ironic is that many of the TV shows I watch now are filmed in widescreen. But the movies aren't shown that way.
For those of you who don't like the black bars at the top and bottom of your screen and go for the fullscreen versions of the movies, did you check out examples page of the link above? It's amazing how much is lopped off when it gets to the little screen.