- Colbert Bump: It's received a lot more attention lately after being revealed as the favorite musical (and movie) of Lewis Lovhaug, the host of the wildly popular Atop the Fourth Wall, with him citing the important role it played in forming his personal sense of morality as a child.
- Cut Song: "Fie on Goodness" is cut from some productions. Another number, between Mordred and Morgan LeFey, is often cut. Nobody misses it.
For the film:
- Actor-Inspired Element: It was Vanessa Redgrave's idea to do "Take Me to the Fair," in a constantly changing setting with new backgrounds and costumes for every change of verse to show the passage of time.
- Awesome, Dear Boy: Richard Harris desperately campaigned to play King Arthur, despite being repeatedly refused due to his limited singing ability. At one point he even paid a man to carry a board down the Strand that said, "Harris Better than Burton, Only Harris for Camelot". When Vanessa Redgrave was cast as Guenivere, Harris sent a note to producer Jack L. Warner, which read, "Height of Vanessa Redgrave: 5 feet 11 inches. Richard Burton: 5 feet 10 inches. Richard Harris: 6 feet 2 inch,"
- California Doubling: Despite being set in Medieval England, the movie was actually filmed on location in Spain.
- Cut Song: "The Jousts", "Before I Gaze At You Again", "The Seven Deadly Virtues", "Persuasion" and "Fie On Goodness!" were cut from the film.
- Fake Brit: Franco Nero as Lancelot.
- Prop Recycling: The knights' armor in the film was brought to Hollywood from Spain, where it had been used in El Cid.
- Romance on the Set: Much like their characters, Vanessa Redgrave and Franco Nero were lovers at the time.
- Wag the Director:
- Richard Harris insisted on cutting Lancelot and Guinevere's love scene, because he felt that it reduced the dignified aspects of the king. When Jack L. Warner refused to comply, Harris burst into his office and started pounding on the desk.
- Vanessa Redgrave insistined on "creative" enhancements to her dialogue, costumes, and character. For one musical number which accents Guenevere's playful attitude towards Lancelot, she baffled the director by singing her lyrics in French. When questioned as to why, she said, "We're making fun of Lancelot, aren't we? And he's French. Well, the whole idea is that by singing it in French we're making more of a joke of him." Luckily, after an exhausting debate, Logan managed to get her to record the lyrics in English.
- What Could Have Been: The original plan was to have Richard Burton and Julie Andrews reprise their stage roles as King Arthur and Guinevere. This fell through when due to salary disagreements. Warner Bros. considered having Burton star opposite Elizabeth Taylor and Peter O'Toole as Guinevere and Lancelot, but this was deemed too expensive.
For the TV Series:
- Awesome, Dear Boy: Eva Green is a huge lover of witches and the occult, and loves the chance to play them.
- Dueling Shows: Game of Thrones and more loosely Merlin.
- Fake Brit:
- Eva Green once again downplays her French accent to play a British character.
- Peter Mooney, who plays Kay, is Canadian, as is Lara Jean Chorostecki (Bridget).
- Diramuid Murtagh (Brastias) is Irish.
- Playing Against Type: Claire Forlani was famous for various love interest roles in American films during the 90s. Playing a Proper Lady in a fantasy piece is very different. What's more is that it's one of the first major roles where she gets to use her natural accent (she's English but normally plays Americans).
- Stillborn Franchise: In the season finale, the Round Table is established, and Mordred is conceived. Then the show was axed. The official reason was lead actors having prior commitments, but lower viewership and critical reception compared to contemporary shows like Game of Thrones didn't help.