Cross-Dressing Voices: June Foray as Rocky. Bill Scott also frequently played little old ladies, such as assorted fairy godmothers in Fractured Fairy Tales.
Hey, It's That Voice!: Rocky and Natasha were voiced by June Foray, who voiced many female Looney Tunes characters, as well as other cartoon characters both past and present. Boris Badenov was voiced by Paul Frees, who was prominent in cartoons produced by Rankin/Bass and other studios. Australian viewers may recognize Keith Scott as Bullwinkle, as he has been in most of Yoram Gross' animated films.
What Could Have Been: In 1981, there was going to be a revival involving a Super Bowl parody. It was ultimately scrapped because the NFL didn't like the idea of parodying team owners and it involved Boris fixing the game.
If Disney had the rights to make a new Rocky and Bullwinkle series in 1989, we would've had this. It would've had new Rocky and Bullwinkle stories, new Peabody's Improbable History stories, new Dudley Do-Right stories, new Mr. Know-It-All segments and a whole new segment called Fractured Scary Tales, which would've been spoofs of famous horror films. Of course, if Disney did have the rights, then we wouldn't have gotten what was the end result of the replacement pitch, Darkwing Duck.
A few years before Rocky and His Friends began, there was a storyboard idea called The Frostbite Falls Revue, which would've starred Rocky, Bullwinkle (then called Canadian Moose), Sylvester the Fox, Flora Fauna, Blackstone the Crow and Oski the Bear. It would've involved them running a TV station in the North Woods.
When Bullwinkle questions the narrator's over-the-top description of Oklahoma, the narrator irately asks him if he'd like to narrate the film—in a way, though, he already is, as both are being voiced here by Keith Scott.
Box Office Bomb: The film takes the crown as the most expensive animated/live-action hybrid box office failure of all time.
Fake Nationality: Keith Scott, who provides the voice of Bullwinkle in the film, is actually Australian. Fearless Leader, Boris, and Natasha are all played by Americans, sporting Russian-esque type accents.
The Other Darrin: Interesting case in this movie. Yes, Robert DeNiro played Fearless Leader, Jason Alexander played Boris, and Rene Russo played Natasha, but when in their original, cartoon form, Keith Scott voices both Fearless Leader and Boris, and June Foray voiced Natasha.
Promoted Fanboy: Keith Scott is a huge fan of Jay Ward's work (but despite the surname, not a relative of Bill Scott). He got to voice Bullwinkle, the narrator and the cartoon versions of Boris and Fearless Leader in the movie. He even wrote a book (The Moose That Roared) on Jay Ward, his staff and their work. It's well worth seeking out.