FW800, illuminated keyboard, 4GB RAM.case and SD card slot for starters.
And so if that other stuff--case, SD slot, Firewire, perhaps need for more than 4GB, or a SS harddrive, backlit keyboard, etc.--is important to you than $100 is not too much to pay for it the options.
the macbook pro is for professionals.. duh...
oh you wanted tech specs...
then for $200 you get:
twice the ram, bigger HDD, aluminum case which is slightly thinner than the plastic one, glass screen, backlit keyboard, battery indicator lights, IR sensor for apple remote, SD card slot, FireWire 800... did I miss anything?
MB and MBP both have a 250GB HDD.
I don't know where everyone is getting a $200 difference from. It's $100 difference for non students for the base model and it costs $100 to upgrade a macbook w/ 4gb of ram. You still will have a thicker, heavier, less durable machine without an sd slot, backlit, firewire.
For a student the price diff is larger at $150 between base models. It costs $90 to upgrade the ram to 4 gb
Student:
1,039 for a macbook w/ 4gb of ram
1,099 for mbp
Stop spreading misinformation, everybody is getting the $200 difference, because that is how much it is.
http://i48.tinypic.com/6szz7k.jpg