I kept a low profile in the movie theater.
However, I did get a few strange looks from people who saw that I was not clapping and cheering along with them.
It was a disturbing experience.
Michael Medved just made an interesting observation about the film - note Moore never mentions the mantra of "tax cuts for the rich" in his movie (while his socialist leanings are such he's previously expressed a preference for 70% income tax) - in the case of F911 however the premise Moore starts with is that Bush did nothing in his first 8 months in office except take vacations while, in truth, Bush was pushing through major pieces of legislation including "No Child Left Behind" + tax cuts, so if he was to mention tax cuts at all it would yank the legs out from the first premise (LIE) he tries to establish in the movie.