In which TV series is Tony Soprano a main character?

Who played Steven Hyde in 'That '70s Show'? In which TV series is Steven Hyde a main character? Who played Red Forman in 'That '70s Show'? Who played Tony Soprano in 'The Sopranos'? Who played Carmela Soprano in 'The Sopranos'? Who played Christopher Moltisanti in 'The Sopranos'? In which TV series is Christopher Moltisanti a main character? In which TV series is Josiah Bartlet a main character?