Complex sentence: He is also known for his roles in the movies "The Creation of the Humanoids" and "Plan 9 from Outer Space", and he also had multiple guest-starring roles in the television series "Dragnet" and "Alfred Hitchcock Presents".
Split into simpler sentences: He is also known for his roles in the movies "The Creation of the Humanoids" and "Plan 9 from Outer Space". He also had multiple guest-starring roles in the television series "Dragnet" and "Alfred Hitchcock Presents".