For those of you who want to hack open your new Macbook Pro, perhaps to replace the hard drive with a bigger one, it’s rather easy and only involves unscrewing 4 screws basically.
I’ve personally hacked Macs before and I would have to say they are the easiest of them all. (and it seems that it gets easier and easier every year.)
Folks at iFixIt.com have a great in-depth guide, see here.