Look Who's Talking
In 1987, Alley starred alongside Mark Harmon in the comedy film "Summer School". The film was a box office success, grossing over $35 million in the United States. Later that year she joined the cast of NBC sitcom "Cheers", replacing Shelley Long and remaining with the show until its eleventh and final season. In 1989, Alley starred with John Travolta in "Look Who's Talking". The film grossed over $295 million worldwide. They then went on to make two other films centered around the same theme, "Look Who's Talking Too" and "Look Who's Talking Now!"