In which TV series is Bo Duke a main character?

In which TV series is Louie De Palma a main character? Who played J.R. Ewing in 'Dallas'? In which TV series is J.R. Ewing a main character? Who played Bo Duke in 'The Dukes of Hazzard'? 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 Sam Malone in 'Cheers'?