I find it really interesting to hear about different religions. I wonder how people (and young people at that!) can know so much when it seemingly requires an encyclopeadic knowledge of a vast quantity of texts! It would be like studying full time for a degree in addition to everythig else you have to do!
I just find it quite fascinating (growing up in an atheist society, I am learning about my religious heritage as I go along). In truth, all the rules, especially the ones from the Leviticus and Deuteronomy, are quite obscure to say the least! However, I believe that in their totality they teach us something essential - that in a civilized society there are laws that govern how we have to behave to one another, and that we all, from illegal immigrant up through the president, have to live by it.
At the same time, it is quite amazing how many rules are still relevant. For example, my friends and I were recently discussing a potential moral dilemma. Say a friend asks you to keep some money for him, and you get robbed. Do you have to reimburse your friend? Well, apparently Judaism has answered this question centuries ago - yes if you received anything for keeping the money, no if you did it for nothing