I was on 'Murder She Wrote' with Angela Lansbury. She was fantastic... she was lovely to everyone, she was always on time, prepared. Whereas when I worked with Bob Hope, he didn't know his lines. He had to have these huge big cards... he hardly said two words to me all day.
Actually, guest star roles are really hard. Since you have to walk into a show where the cast has been working together for a long period of time, it can be a real challenge. And you have to feel your way around that while still making an impact on the overall effect of the show.