People used to do something worthwhile and then become famous. Now they become famous and are treated like they have done something worthwhile. Ron Howard’s latest comedy addresses this phenomenon as if it were the long-lost love child of Andy Warhol’s 15 minutes of fame. It wants to wring laughs out of a reality cable program that treats a video clerk’s (Matthew McConaughey) life as 24-hour peep show. It is only moderately entertaining. The story could have ventured into fascinating territory if it wasn’t so securely joined at the hip to Jerry Springer.