"Teen Wolf" returns to MTV tonight, and, in what's becoming a rite of passage, it's getting its own postshow. Wolf Watch joins the long line of MTV after-shows — "Awkward.," "Catfish," and the various "Teen Moms" all have them, and the format stretches all the way back to the early days of "The Hills." But MTV is no longer alone in the after-show market: AMC's "Talking Dead" airs right after "The Walking Dead," and over the summer, the less punnily titled "Talking Bad" aired after "Breaking Bad." (Let's place our bets now on whether AMC will air a post–"Mad Men" series when that show returns. We're betting yes.) But "Teen Wolf" and "TWD" shouldn't have all the fun. Many shows should have postshows! Here are a few suggestions.