Ahh, so many things. Firstly, we cannot ignore the CPU, as the SR chipset allows more maximum RAM. In the future, should the OP decide to buy even more RAM to speed things up (and who doesn't like faster?), the macbook will be capped at 2gigs (officially, unofficially, 3.3). The mbp has an officialy cap of 4gigs. Big difference when your machine begins to slow down and needs some help.
Secondly, the $600 price difference ignores things like the LED backlit screen, the Matte option (which in my opinion is worth a lot...glossy angers me), backlit keyboard (I also happen to dislike the macbook's keyboard, it's weird feeling; the mbp is much better for me), better speakers (mind you notebook speakers are never great, but the mbp speakers are much, much better), and let's not forget the little things like a card reader, USB ports on BOTH sides (for those of you who are left-handed, or just want one on each side), an extra Firewire port, and the abilty to power a 30" external compared to the macbook's 23".
Not so simple when you look at the entire picture.
Where did you get over a grand from? the macbook starts at $1099 and the mbp starts at $1999. Not to mention that the OP is probably looking at the mid range macbook so he can have a DVD burner (Apple, what's up with that), so that's $1299. Difference equals $700, and factor in RAM to give you $600.
I would have to completely agree with all this. All these points may seem as minor things now, but you will find them very useful overtime. I currently own a first gen macbook with 2 GB ram and I am upgrading to the base MBP. The main reason I am doing so is for: 1. Santa Rosa 2. 800 MHz FSB 3. Back-lit keyboard 4. Express card slot 5. 1440 x 900 screen resolution 6. LED screen 7. Dedicated Graphics Card 8. Better speakers, my macbook speakers are way below expectations 9. sleeeker looking in my opinion and is lighter than it looks, unlike macbook which is heavier thanit looks 10. aluminum is pretty damn sexy.
Good job CalBoy!!