Church of Christ, from my experience is way out there.
I went to a service once, I was some place and these people came up and introduced themselves and gave me a card with the church name and I figured I'd go.
The longest church service EVER. There was no music. I asked about this, and was told that there's no mention of music in the New Testament so no music. I asked well, there's lots of mention of music in the Old Testament but the answer was some thing along the lines of we follow the New Testatment.
And the service? An entire service on how being fat is a sin against God. It's a sin because your body is a temple and an extension of God (since we are made in His image) and that being fat is desecrating that and tarnishing God. Being fat is continually sinning so unless you get thin you are risking your chances in Heaven even if you are saved. Because you are supposed to stop sinning to really get in Heaven.
The preacher mentioned one woman in particular that he was "consueling' and talked about how they were working together so she could be skinny and right with God.
I was cornered as I left by the person who gave me the card and when she gushed about the sermon all I could do was clench my teeth and say it was interesting. And ask about the no music to deflect any further questions and then get out.
Not too long after that there was a write up in the paper about how Church of Christ is seen as cult like by some people and how it cuts members off from their families etc.