Trivia: Guy Williams never became a movie star despite his good looks and a charismatic screen presence, but on television he was a star twice over, in the 1960s as Professor John Robinson on the Irwin Allen-produced series Lost in Space and, for those with longer memories, in the title role of the Walt Disney-produced series Zorro; he also cut a memorable presence in a series of episodes of Bonanza during the early '60s, as a cousin of the Cartwrights from south of the border. Born Armando Catalano in New York City, he was the son of one of Italy's champion swordsmen, and he was an expert fencer himself by the time he was in his teens. His good looks made him a natural as a model, and he appeared in numerous newspapers and magazines during the early to mid-'40s. In 1946, at the age of 23, he was signed to MGM, but the studio's declining postwar period proved a dead end of tiny bit roles that went nowhere. He studied acting with Sanford Meisner and was serious about being more than a model who could read lines, but it wasn't until the 1950s that he got his chance. In 1952, Williams was signed to Universal-International, where he finally began getting some respectable screen time, once he got past his initial Universal appearance, in Bonzo Goes to College and a thankless role in Nathan Juran's swashbuckler The Golden Blade. In The Mississippi Gambler (1953), The Man From the Alamo (1953), and The Last Frontier (1956), Williams played small to medium-sized supporting roles that showed him off to good advantage as an actor. His career seems to have stalled at the point where he appeared in American International Pictures' release of I Was a Teenage Werewolf (1957). In 1957, however, Williams became a star on television when he was chosen to play the title role in the Disney television series Zorro. It was only in production for two seasons, but Disney's perpetual presence on television brought Williams' dashing heroic figure into households for years after the initial run had ended. Williams was subsequently pegged by the producers of Bonanza as a potential replacement for Pernell Roberts in the series, and he was tried out in the role as the Mexican-born cousin of the Cartwrights across numerous episodes. In 1963, he also starred in the German-made international film Captain Sinbad, directed by American adventure film specialist Byron Haskin. In 1964, Williams was cast in the most familiar role of his career, as Professor John Robinson on the series Lost in Space (1965-1968); although he was a co-star with June Lockhart, he came to be partly overshadowed by Billy Mumy and Jonathan Harris in the story lines. Nevertheless, he provided a firm dramatic anchor for the series. As with most of the cast of Lost in Space, work was relatively hard to come by once it was canceled, but Williams evidently had no worries about money, having done well in his own investments and various business ventures. He also discovered on a visit to South America that he was very much a pop culture hero in most of Latin America, where Zorro had been an enormous success on television and was seemingly being rerun in perpetuity. He moved to Buenos Aires, enjoying a very comfortable retirement from the mid-'70s, and died of a heart attack there in 1989.

Trivia: Classically handsome film leading man Neil Hamilton was trained in stock companies before making his 1918 film bow. He rose to stardom under the guidance of D. W. Griffith, who cast Hamilton in leading roles in The Great Romance (1919), The White Rose (1923), America (1924) and Isn't Life Wonderful? (1924). In an era when sturdy dependability was one of the prerequisites of male stardom, Hamilton was one of the silent screen's most popular personalities, as well suited to the role of faithful Nick Carraway in The Great Gatsby (1925) as he was to the Foreign Legion derring-do of Beau Geste (1927). His pleasant voice and excellent diction enabled Hamilton to make the transition to sound with ease. Unfortunately, he always seemed a bit of a stick in his talkie portrayals, and it wasn't long before he found himself shunted off to "other man" assignments (Tarzan and His Mate) and villainous characterizations (The Saint Strikes Back). By the early 1940s, he had lost both fame and fortune -- and, as he'd ruefully observe later, most of his so-called industry friends. Only the love of his wife and his rock-solid religious convictions saw him through his darkest days. Hamilton made a comeback as a character actor, playing brusque, businesslike types in TV series like Perry Mason and Fireside Theatre. From 1966 through 1968, Neil Hamilton co-starred as poker-faced Commissioner Gordon on the TV series Batman.

Trivia: To hear him tell it, Robert Vaughn has spent most of his acting career getting very well paid for being artistically frustrated. Born in Manhattan and raised in Minnesota, Vaughn went straight from college drama classes to his first film, the juvenile delinquent opus No Time to Be Young (1957). Ever on the search for "meaningful" roles, Vaughn signed to play a survivor of a nuclear apocalypse in what he assumed would be a serious, politically potent drama: the film was released as Teenage Caveman (1957). Though Oscar-nominated for his performance as a crippled, alcoholic war veteran in The Young Philadelphians (1959), Vaughn didn't rise to full stardom until 1964, where he was signed to play ultra-cool secret agent Napoleon Solo in the TV espionage series The Man From U.N.C.L.E. (1964-1968). He swore at that time that he'd never, ever subject himself to the rigors of another television series, but in 1972 he was back to the weekly grind in the British series The Protectors. In films, Vaughn has been most effective as an icy, corporate heavy, notably in Bullitt (1968) and Superman III (1982). On-stage, Vaughn has exhibited a special fondness for Shakespeare (Hamlet in particular); he was given an excellent opportunity to recite the Bard's prose on film when he played Casca in Julius Caesar (1970). A dyed-in-the-wool liberal activist, Vaughn worked on his Masters and Ph.D. in political science at L.A. City College during his U.N.C.L.E. years; his doctoral thesis was later expanded into the 1972 history of the HUAC, Only Victims. Vaughn later had several recurring roles on TV shows like The Nanny and Law & Order and the British series Hustle and Coronation Street. He died in 2016, just shy of his 84th birthday.