In which film is Peter Venkman a character?

Who played Vivian Ward in 'Pretty Woman'? In which film is Vivian Ward a character? Who played Phil Connors in 'Groundhog Day'? Who played Peter Venkman in 'Ghostbusters'? Who played Axel Foley in 'Beverly Hills Cop'? Who played Truman Burbank in 'The Truman Show'? In which film is Truman Burbank a character? Who played Stanley Ipkiss in 'The Mask'?