The acting was so bad, it's hard to be disturbed.
Everyone in this movie was such a horrible actor, downright cheesy at times, you never really got a feel these people were being tortured. And Jennifer had no personality whatsoever. She never felt for her victims.
Just imagine how potentially disturbing this movie could be if it had top notch actors and Quentin Tarantino or Robert Rodriguez directed it.
You're never fully dressed without a smile.