yeah, don't take "classes to prepare for law school." take a traditional major like english, history, economics, political science, physics, whatever floats your boat. and to piggy back on that, I would stay away from crim justice, political science, things that are common. If I had it to do over again I might not ahve majored in history, though I don't know what else I would have majored in.
majoring in something in the sciences, or philosophy or english would be good. law schools are looking for people with majors that aren't a dime a dozen and that also require critical thinking. only take a couple of classes as electives that relate to law. for instance, i'm majoring in environmental science, but i've taken a class on "the american judicial system," and i'm taking "privacy law" and "civil liberties" next semester just to see what i'm interested in.
I'm sorry but this kind of advice is BUNK... take virtually any demanding major in science or liberal arts, work hard, do well and you should be fine!!! history and polisci are classic "pre-law" (to use the OP's terms) concentrations for a reason!... as a law school applicant, you should set yourself apart in terms of your personal statement, your letters of recommendation, your work experience, your extracurriculars, your volunteering, and last but CERTAINLY not least your GPA and LSAT... your actual major is not where you want to be different for different's sake... any "hard" natural science or liberal arts program is appropriate... if you find that you love polisci or history... go for it! they are great preparatory backgrounds for law... pls, do NOT avoid history or polisci because you think they won't differentiate you... that would be robbing you of a potentially valuable undergraduate experience, if in fact, you would have found either interesting/worthwhile... i will admit that i take personal exception to this kind of thinking because i am a history major but more so because i think history is wonderful and i would hate to think that someone who would feel the same way would decide not to pursue a degree in history for fear of being too "ordinary"... find something you are interested in, and do well in it!