The party game has it that every actor in Hollywood is connected to Kevin Bacon by no more than six degrees. But that game is getting harder and harder to play. The versatile actor hasn’t been seen on-screen much in the last few years. In fact, “Super” is his only 2010 film credit — and the movie’s just being released now. Is the star just very picky about the roles he chooses? Or are casting agents unsure about what to do with the quirky guy once dubbed one of the most talented actors never to be nominated for an Oscar? That casting quandary is a lot like the one that faces the reviewer of “Super.” What to do about a movie that’s alternately sweet, hilarious and grotesque?