Complex sentence: Treacher played the role of Constable Jones in "Mary Poppins" and made many guest appearances on TV, in addition to being Merv Griffin's announcer and sidekick on the "The Merv Griffin Show" in the mid 1960s and early 1970s.
Split into simpler sentences: Treacher played the role of Constable Jones in "Mary Poppins" and made many guest appearances in tv shows. Treacher was Merv Griffin's announcer and sidekick on the "The Merv Griffin Show" in the mid 1960s and early 1970s.