Actually met: Rick Springfield at the Louvre Museum in 1985. He was on concert tour. Still riding high from the General Hospital and "Jessie's Girl" fame. Now I think he's playing free concerts at festivals around the country. In another words - has been.
Actor Charles Durning - very nice man.
Another character actor: Jack Warden. Another nice guy.
Jerry Mathers and Tony Dow
I have met others but I'd be copying and pasting photos all day.