Complex sentence: The former was made into a biographical comedy film in 1997 that had Stern and his radio show staff play as themselves which topped the US box office in its opening week and grossed $41.2 million domestically.
Split into simpler sentences: The former was made into a biographical comedy film in 1997 that had Stern and his radio show staff star as themselves. It topped the US box office in its opening week and grossed $41.2 million domestically.