| Though he and wife Brett Somers separated in 1974, the two never divorced. |
| Was part of the original 1959 Broadway cast of the musical Gypsy with Ethel Merman, although he had no solo songs. |
| After his first audition he was encouraged to become a truck driver. |
| Tied with Burgess Meredith for the most appearances (four) on The Twilight Zone. |
| Replaced Walter Matthau on Broadway as Oscar in The Odd Couple. Years later, Klugman won two Emmys for his portrayal of Oscar on the TV series of the same name. |
| Roomed with Charles Bronson at the start of their careers. |