Who played Debra Barone in 'Everybody Loves Raymond'?

Who played Mark Greene in 'ER'? In which TV series is Mark Greene a main character? Who played John Carter in 'ER'? Who played Ray Barone in 'Everybody Loves Raymond'? In which TV series is Debra Barone a main character? Who played Marie Barone in 'Everybody Loves Raymond'? In which TV series is Marie Barone a main character? Who played Buffy Summers in 'Buffy the Vampire Slayer'?