As both a groundbreaking feat for the world of animation and an enjoyable crime comedy, Who Framed Roger Rabbit stands in a class all its own. Here are a few interesting nuggets about the cartoon-live action classic, on the 30th anniversary of its release.

1. IT WAS THE MOST EXPENSIVE MOVIE EVER MADE.

At the time of its release on June 22, 1988, Who Framed Roger Rabbit boasted the highest budget of any film to date: a whopping $70 million (nearly $150 million in today's dollars). It topped the previous record holder, Rambo III (which had come out less than a month earlier), by about $12 million. Roger Rabbit held the designation until July 1991, ultimately falling to Terminator 2: Judgment Day, which cost $100 million.

2. THE FILM ALSO BROKE THE RECORD FOR LONGEST END CREDITS.

Recognizing a cast and crew of just over 800, Who Framed Roger Rabbit featured the longest closing credit reel ever upon its release. The film’s credits ran for over 10 minutes, even without attribution for Jessica Rabbit’s voice actor, Kathleen Turner.

3. BOB HOSKINS WAS NOT THE FIRST PICK FOR EDDIE VALIANT.

Director Robert Zemeckis and producer Steven Spielberg communicated with a number of big name actors in regard to the casting of human protagonist Detective Eddie Valiant. Among those considered for the curmudgeonly private eye were Harrison Ford (who was too expensive), Chevy Chase (who was not interested in the part), and Bill Murray (who allegedly never got the message and was dismayed to learn he had missed such an opportunity). Other names tossed around included Robert Redford, Jack Nicholson, Sylvester Stallone, Wallace Shawn, Ed Harris, and Charles Grodin.

4. CHRISTOPHER LLOYD WASN'T THE FILMMAKERS' FIRST CHOICE EITHER.

Walt Disney Studios

Before landing on Zemeckis’s Back to the Future colleague Christopher Lloyd as the nefarious Judge Doom, producers considered Tim Curry (who they deemed too scary), John Cleese (not scary enough), and Christopher Lee (who turned the role down). Also in early contention: Roddy McDowell, Eddie Deezen, and Sting.

5. LLOYD WAS MORE TERRIFYING THANKS TO ONE SIMPLE TRICK.

Prompted by a suggestion from Zemeckis, Lloyd does not blink even once while onscreen in the film.

6. CHARLES FLEISCHER ACTUALLY DRESSED UP LIKE ROGER RABBIT WHEN PERFORMING HIS LINES.

Voice actor Charles Fleischer was so devoted to his role as the animated title character that he asked the costume department to create a full-body Roger Rabbit suit for him to wear on set. Fleischer delivered all of his lines from inside the suit, claiming that it helped both him and costar Hoskins immerse within the fantastical world of the film (even though Fleischer admits that Hoskins initially thought he was out of his mind).

7. THE “DIP” IS REAL.

Walt Disney Studios

Who Framed Roger Rabbit subverts the old maxim about cartoon characters never dying by introducing the one thing that proves fatal to the lot: a liquid concoction known as “dip.” There is actually a bit of science behind this plot device. The ingredients of the dip are revealed to be turpentine, benzene, and acetone, which are all paint thinners commonly used to erase animation cells (in other words, wipe out cartoon characters).

8. THE FILM SENT BART SIMPSON TO STARDOM.

One of the film’s most chilling sequences sees Judge Doom exacting his wrath upon an anthropomorphic cartoon shoe. The character never speaks, but it squeaks and whimpers as the Judge lowers it into a vat of dip. Those cries were the work of relatively unknown voice actor Nancy Cartwright, who would rise to fame one year later as the voice of Bart Simpson.

9. EARLY DRAFTS OF THE SCRIPT WERE DARKER.

The screen adaptation of Gary K. Wolf’s 1981 novel Who Censored Roger Rabbit? underwent quite a few changes before it hit the big screen. Some drafts involved Jessica Rabbit and Baby Herman each turning out to be the story’s villain, Judge Doom revealing that he was the hunter who shot Bambi’s mother, and even Roger’s death.

10. ROGER AND EDDIE HAD FAMOUS STAND-INS FOR TEST SHOOTS.

At various stages in the film’s development, animators put together test reels for studio presentation. An early go at the project employed the vocal talents of Paul Reubens, better known as Pee-wee Herman, for a variation of Roger marked by neurotic stammering. Some time later, Richard Williams (who eventually became Who Framed Roger Rabbit’s animation director) treated Walt Disney Pictures to a taste of his talents via a scene uniting a more recognizable Roger with an appropriately cranky Eddie Valiant. Here, Eddie is played by future The Sopranos star Joe Pantoliano.

11. ROGER WAS MODELED AFTER BIG STARS.

In designing Roger Rabbit, Williams wanted to incorporate elements from classic animation. He has expressed that Roger is meant to embody the production caliber of Disney, the character design of Warner Bros.’ Looney Tunes, and the personality and sense of humor of animator Tex Avery. Furthermore, Roger’s anatomy and attire can be broken up by studio influence: His face is meant to resemble a Looney Tunes character’s and his torso a Disney hero’s, while his overalls are a nod to Goofy, his gloves to Mickey Mouse, and his bow tie to Porky Pig.

12. JESSICA WAS INSPIRED BY SOME A-LISTERS, TOO.

While Jessica Rabbit’s principal aesthetic inspiration was the titular heroine of Avery’s famous short “Red Hot Riding Hood,” she had a few human influences as well. Among them were Lauren Bacall, Rita Hayworth, and Veronica Lake.

13. THE FILM SPAWNED THE INDUSTRY TERM “BUMPING THE LAMP.”

For movie animators and special effects artists, the phrase “bumping the lamp” refers to the application of tremendous effort to a particular aesthetic feature that viewers will more than likely never even notice. The saying entered the lexicon thanks to a scene that involved Bob Hoskins’s character repeatedly bonking his head on a low-hanging ceiling lamp, causing it to swing around the room. Animators had to draw and redraw Roger Rabbit in a fashion that was consistent with the rapidly fluctuating illumination of the scene. While the team was well aware that absence of the effect wouldn’t bother most audiences, they were so devoted to their craft that they stuck with it. (You can watch the scene above.)

14. THE FILM FEATURES OVER 140 PREEXISTING ANIMATED CHARACTERS.

Who Framed Roger Rabbit is the only film to date to unite Disney mascot Mickey Mouse and Warner Bros. icon Bugs Bunny; the pair shares a scene in the latter half of the movie, merrily skydiving next to an airborne Bob Hoskins.

In addition to Mickey, Disney showcased 81 distinct characters, as well as 14 “groups” of characters (for instance, the titular sprites from the short “The Merry Dwarfs” or the anthropomorphic fauna from the short “Flowers and Trees”) in the movie. Meanwhile, Bugs was one of 19 Warner Bros. characters to get screen time. MGM, Paramount Pictures/Fleischer Studios, Universal Studios, 20th Century Fox, King Features Syndicate, and Al Capp’s cartoons all had characters make appearances as well.

15. THAT SAID, THERE WERE SUPPOSED TO BE MANY MORE CAMEOS.

Although Zemeckis and his crew managed to populate Who Framed Roger Rabbit with a vast array of recognizable characters, their original ambitions were even more sweeping. Contractual issues and time constraints kept characters like Popeye, Chip and Dale, Pepe Le Pew, Mighty Mouse, Tom and Jerry, Pedro from Saludos Amigos, Casper the Friendly Ghost, Witch Hazel, Heckle and Jeckle, several characters from Fantasia, and even Superman from the final cut.