Who played Sam Malone in 'Cheers'?

In which TV series is Bo Duke a main character? Who played Daisy Duke in 'The Dukes of Hazzard'? In which TV series is Thomas Magnum a main character? Who played Michael Knight in 'Knight Rider'? Who played Diane Chambers in 'Cheers'? In which TV series is Diane Chambers a main character? Who played Norm Peterson in 'Cheers'? In which TV series is Norm Peterson a main character?