Reverend Kommandant Klink - S2-E25
Trivia: In this episode, Major Wolfgang Hochstetter makes his appearance. He is portrayed by Howard Caine, who played two other characters before this, one as a anti-aircraft battery commander, and another as a special investigator for the SS.
Answer: It's a solitary cell. Steve McQueen, star of 'The Great Escape' is known as the 'Cooler King'.