Data, data, data
I am somewhat reasonably certain that I have backed up all the data on my harddrive.
Word of advice. Never ever (ever!) take a Macintosh laptop apart. I mean ever. Unless you have a) all the tools in the world, b) a step by step pictographic guide, and c) aren't particularly worried about putting it back together again.
Seriously.
I like Macs. Have used one as my home computer for years. But, really, could you make the hard drive any harder to get to, Apple?