SEASON PREMIERE: CBS has yet to fully cash in on the movie stardom of Melissa McCarthy, who starred in this sitcom before breaking out on the big screen, and has stayed with it ever since. This is the premiere episode of Season 4 – that’s how long this show has been around – and starts, this season, with a plot that breaks McCarthy’s Molly away from her school blackboard, and sends her out as a loose cannon into the wider world.