The thought of Dennis Rodman rubbing elbows with North Korea’s Kim Jong-Un is so fantastically bizarre and so incredibly frightening, it’s hard to decide whether to laugh or to begin building an underground bunker. If a rogue nuclear power can embrace someonesuch as Rodman but give the cold shoulder to U.S. diplomats, you have to worry for the future of the planet, don’t you? The former Bulls wild child was in North Korea last week to film a sports documentary. The man who once wore a wedding dress and a wink referred to Kim, the country’s supreme leader, as ‘‘an …