I've got an album up already showing how I made some shelves for that very odd shaped TV cabinet.
http://www.jaycoowners.com/forums/me...lbums1133.html
This weekend was adding a shelf to the medicine cabinet. If you're so inclined, the dimensions are 36 1/2" long in front, 33" long in back (the angle on the right is about 50*) and 4 1/8" deep.
Next up is to tackle the cabinet in the bedroom.