The 1980 failure of "Heaven's Gate" led Transamerica to sell which film studio to MGM?

Debbie Allen played dance teacher Lydia Grant in which film and TV series about a New York performing arts school? In which 1980 workplace comedy did Dolly Parton make her film debut? On "Dallas", which 1980 event made Bobby acting head of Ewing Oil? Who composed the music for the stage musical "Evita"? In which 1980 film do two shipwrecked children grow up on a tropical island to be Brooke Shields and Christopher Atkins? Who won the Best Actor Oscar for playing Jake LaMotta in "Raging Bull"? In which 1980 film does a madman smash through a door and announce "Heeere's Johnny!"? In which 1980 comedy does a doctor say "I am serious... and don't call me Shirley"?