As Robin swims the channel from Jerusalem back to England, the orchestra plays an epic version of... "Row, Row, Row Your Boat."
The musical switchups during Robin and Little John's staff fight. It gets faster and sillier the shorter their staffs get, then finally turns into a chirpy, cartoonish ditty when they're reduced to smacking each other's knuckles with sticks.
This was Dave Chappelle's first film. Who would have guessed he would later make a successful and over-referenced gag out of a guy named Lil Jon?
Will Scarlett O'Hara is played by Matthew Porreta, who played Robin Hood later on in a TV series. note Which was riding on the popularity of Kevin Sorbo's Hercules series at the time, rather than any Robin Hood property. There was also a Sinbad series then. They replaced him in the role long before it was discontinued.
A minor one, but the Italian assassin who Don Giovanni dispatches to kill Robin? His name is "Dirty Ezio."
Cary Elwes makes fun of Kevin Costner's terrible British accent in this film. Later, Elwes famously attempted an American accent in Saw and failed spectacularly (oddly enough, his fake American accent in Hot Shots! and Liar Liar are believable).
Ho Yay: Prince John and the Sheriff of Rottingham, in spades.
Rabbi Tuckman, who is one of the most iconic characters of the movie despite appearing in only two scenes.
Don Giovanni, who's only seen once, yet leaves a likewise memorable impression as the Sheriff's trusted cohort.
The Young Lad. Though his scene is a cheap Home Alone gag, the young actor's over-the-top performance makes it one of the funniest scenes in the movie.
Padding: A few scenes, such as Robin first meeting Little John and Maid Marian visiting the Merry Men's campsite, are all paced rather slowly, killing a lot of the comedic momentum. Even Don Giovanni's scene, while considered one of the funniest, really only exists so that Mel Brooks can do a parody of The Godfather.