I finally finished building my new AV center and have it in place. It's a Salamander Synergy knock-off as discussed here before. 6'2" wide, 20" deep, 28" tall. Bottom level for DVDs and cable/manual storage. Middle area 26" wide to handle center channel speakers. And, a sliding center channel shelf to pull the center out in front of the screen a bit.

Here's one pic (there's a regular TV behind the screen for normal watching):