You can see pictures of the floor-to-ceiling cabinet my wife and I built in the gallery section under: Bayne's Upgraded Home Theater.
We used oak-faced laminate and solid oak trim. It has movable shelves, and an opening in the rear to access all the cables. We left the shelves several inches shorter than the full depth of the cabinet so the cables and warm air could travel up to the ceiling.
Bottom line, spend some serious time designing your unit and thinking about cable management and air flow if it's enclosed. Take your time and don't skimp on the right tools for the job. Fortunatley places like Home Deport rent them for a decent price. Good luck, and enjoy!
