I've lived here for about 13 years (and am moving soon), but I finally went to it last year. Maybe this one is mild, or we like our crazy fundy churches too much here, or I was too well prepared to be shocked by anything, but nothing disturbed me - not even one of the last scenes of a woman who had committed suicide in a bathtub but had written a note on the walls (presumably in blood) to her boyfriend, blaming him for making her get an abortion. When you leave the building the hell house is in, you automatically enter a giant tent where there are members of the church waiting to talk to you. Five of them had surrounded one high school girl who was crying hysterically over the abortion room. Some of them were smiling at each other as if to say, "We got one." Some young hipster picked me out and approached me, and before he said anything I told him, "If you can look me in the eye like a man and tell me you honestly think that Jesus would think this was a good method to bring people to His grace, I'll let you give your talk." He couldn't meet my gaze and let me go by.
One of my favorite web-comics, Something Positive, covered Hell Houses in a storyline involving the main character's father a few years ago. It gives you insight into them and is pretty funny.
http://somethingpositive.net/sp10032006.shtml TlalocW