I think in each decade there should be a board for "Other sitcoms" ie "Other 1960's sitcoms" beyond those that have individual boards. While most of the shows that don't have boards could fall into the "one season wonder" category it still would be great to have a board in each decade section to cover the other programs they don't have individual boards as well as topics that cover multiple sitcoms (ie: network blocks, producers, etc.)

Topics that cover multiple sitcoms usually go in the general sitcoms discussion board.