I used to be against mac, but now that you can run windows on mac, and considering my major (graphics/animation) I'm definitely shooting for a mac. But then, macs seem relatively more expensive than the average powerful pc notebook.
Forget all the nonsense in this thread. Do you use Macs or PCs in your classes? Get whichever one you use the most. And do you NEED a laptop? If you don't need one for the graphics stuff especially, just buy a cheap netbook and get yourself a good desktop. Hell you can get a new Mac Mini starting at like $599.
I recently went back to school and am studying IT. I'm also a Mac user at home, which doesn't help much when everything I'm doing currently involves using Windows. Boot Camp works great for the most part, but there are some keys "missing," which means that I sometimes have to do these weird keyboard combinations just to do something easy like "printscreen." This is mildly annoying (you can, of course, plug in a Windows keyboard and have all the functionality; I'm talking about the laptop keyboard)
For my next computer, I'm going back to PC. Will likely be building my own desktop for the first time; seems like it would be fun and a good way to get more familiar with the guts of a PC.