30" Cinema Display is a joy. I used to have one but such a shame that it runs too hot. Living in the UK and working in an office with bad AC, it melted my face :) I let it go.
To anyone planning to use a 30" CinemaDisplay , you will probably need a special Mini DP to Double Dvi active powered adapter. They are not very common so they are a bit expensive. Search for: Tripp Lite Mini DisplayPort to DVI Adapter Cable with Dual-Link Active USB Power MDP to DVI-D, 6 in. (P137-06N-DVI-DL)