The broadcast networks have already started showing off their shiny new fall schedules. That means, of course, the conspicuous absence of several shows you may or may not have liked. Yup, the ax has fallen, and a whole host of network shows have been canceled. Some escaped by the skin of their teeth. (ABC’s low-rated but highly regarded “Cougar Town” is moving to TBS in 2013.) Others emerged battered and beaten. (Fan-fave “Community” will return next season. For a truncated 13 episode run. On Friday nights. Paired with “Whitney.” Also, creator Dan Harmon was told to take a hike.) So which shows are gone, gone, gone?

CBS does two things well: police procedurals and crappy sitcoms. Long after our civilization dies off, aliens will arrive to find cockroaches and reruns of “CSI” and “Two and a Half Men.” So it’s no surprise to see CBS’ fall season crammed with more crime shows and sitcoms. But there’s at least one standout so far—the Jonathan Nolan-created action series “Person Of Interest.”

Nostalgia is a thin bridge to walk. Everybody longs to return to those halcyon days of youth when music rocked louder, movies were less stupid and comic books kicked way more ass. The problem is nothing is ever as good as you remember it. Hollywood, hoping to make another buck or two off your faulty memory, is happy to exploit feelings of nostalgia. There’s hardly a movie, TV show, cartoon, comic strip, comic book, toy, video game or board game that hasn’t been or isn’t about to be brought back to life.