Calvinistic thought is very... troublesome. That's why there's a bit of a reform going on, since no real intellectual would confine themselves to such strict and unforgiving forms of thought.
Anyway...
Many non-believers (and even believers, actually...) mistake that passage about passing judgement. It's to be done with love and forgiveness, not with contempt and righteousness (which few people possess). It's to be done in order to absolve the person of the sin, bring them to God, so they might be able to spend eternity with God (not for you to feel good about your supposed superiority over individuals). Basically, you're supposed to do it so that the person might realize their state of sin so that they might desire purity, and eventually, God himself.
By the way, 'Preacher Dan' is wrong. I'm pretty sure (95%+ sure) that the Jews were given a sort of list of foods they could eat, and couldn't - that of which included shrimp and pork. Many scholars have interpreted this as a sort of saftey, mainly because various diseases are passed through uncooked or poorly cooked foods, and I guess pork (among other things) is especially susceptible.
The Bible calls for believers to stone homosexuals to death.