I'm a psychology major working my way through a chemistry minor (which will take me thru orgo II and biochem, but no p-chem). The biochem is a 3000 level class, but that's it for upper level sciences. I'm also thinking of taking a second minor in biomedical physics, which will include two 3000+ physics classes (but no bio). Of course, my psychology major includes many 3000 and 4000 level classes.
I'm also completing an honors program at my school, and I just don't have room for any more classes.