I've never seen Big Love. As a non-active Mormon, I've been mildly curious, but I figured since it's an HBO soap opera, it wouldn't be worth my while.
I heard about this last episode in which they show a temple endowment ceremony...something very secretive which I never experienced. I left the church before I would have been old enough to receive my endowment. Gabe and I talked about it...he felt it was very offensive and sensational for the producers of the show to include a scene of a sacred practice in the show. I didn't really know how I felt about it, so I played devil's advocate in the discussion.
However, the next day, I went to work, and at some point, my co-workers began discussing the episode. None of them had actually seen it, except for one, who watches it regularly. She had thought that the polygamists were "fucked up"...but after seeing that scene, she decided that the regular Latter Day Saints were the ones who were really crazy. My gut reaction was to defend the church, but since I hadn't expected the conversation, nor had I seen the show, I didn't know what to say and just said that the polygamist family were FLDS.
I don't go to church any more because I disagree with certain aspects of it. That doesn't matter to me, but the fact that I drink, have sex with people I am not married to, and do not believe in the Book of Mormon would certainly matter to them. I would rather quit than be ex-communicated for those things. But I do feel protective of the church, and it hurts me when people say bad things about the church which I feel are not bad at all.
In a way, I'm glad that Big Love depicted the endowment ceremony. I think a lot of peoples' distrust of the church is that Mormons tend to be insular. I think if they knew what an endowment ceremony was and what it meant, I don't think the majority of people would consider it a "freaky" thing. And I don't think that that would compromise the sacredness of the ceremony, or more importantly, the sacredness of one's relationship with God.