When Stanley comes into Michael's hotel room and says "C'mon, Michael, it's game time. Slip on your Hanes, lace up your Nikes, take your Wheaties and your Gatorade, and we'll grab a Big Mac on the way to the Ballpark." All of those things were products that Michael Jordan had been a sponsor for around that time.
After Daffy suggests naming the team "the Ducks", Bugs asks "What kind of Mickey Mouse organization would name their team the Ducks?" This was a dig at the Anaheim Ducks of the NHL, which were established by The Walt Disney Company.
The Monstars/Nerdlucks' names are Pound (orange one), Bang (green), Nawt (magenta), Bupkus (purple) and Blanko (blue). None of their names are mentioned in the film, and neither is the word "Nerdluck."
Noel Blanc (Mel Blanc's son) was originally booked to provide all of the regular Warner Brothers male cartoon characters' voices. But he and Warner Brothers couldn't agree on a contract, so the studio replaced Blanc with four other people to do the 12 male voices, instead of Blanc doing them all.
The scuffed basketball used in the film is a treasured souvenir owned by director Joe Pytka. When held by Michael Jordan it is real, but whenever it is in flight or controlled by the cartoon characters it is animated.
While praying in church for the return of his basketball skills, Charles Barkley says, "I'm never gonna go out with Madonna again." This refers to his own fling with Madonna (not Dennis Rodman's fling, as previously reported).
When Duck, Daffy is modeling potential team uniforms for the other Looney Tunes characters, he states that he's partial to purple and gold. This is a nod to the official colors of Omega Psi Phi Fraternity, Inc. which is the fraternity that Michael Jordan pledged in college. A tradition for some members of Omega Psi Phi is the branding of one or more of the Greek letter Omega on their arms or chest. If you look closely during the scene where Michael Jordan is shirtless in his hotel room while on the phone with his family, on the left side of his chest is a branded Omega.
This is one of the few times where Bugs and Daffy don't share voice actors. Billy West, the voice of Bugs, would later go on to voice Elmer Fudd in many future Looney Tunes productions. He'd also voice Bugs again in some video games, as well as the Direct-to-Video/DVD film Bah Humduck!: A Looney Tunes Christmas (2006).
Moron Mountain is a spoof on Magic Mountain, a Six Flags amusement park in southern California. At around the time this movie was made, Magic Mountain had a contract with Warner Brothers to use the Toon characters.
In order to fill up the audience from a limited selection of characters, one section was made from actual Looney Tunes. The rest were simply replicated over and over and then "seated" next to each other to create the illusion of a full audience.
In an interview a couple of years after the films release, long time Looney Tunes director Chuck Jones was highly critical of the movie. Jones felt it strayed too far from the source material, in particular, saying that Bugs would never openly recruit others in his battles. Jones further maintained that the Bugs he worked on would have single handedly dispatched with the aliens in short order. Jones also took exception with some of the film's dialogue, feeling that some one-liners were inconsistent or inappropriate, relating to the characters who said them.
When Michael first arrives in Looney Tune town, and is talking with the characters, there is a store front sign on one of the background buildings that says "CJ's Toys", a nod to the famous Warner Brothers director/animator Chuck Jones, who created many of the classic Looney Tunes characters.
During the big game, when the Toons are rallying, the purple Monstar is about to attack Bugs and Wile E. when he is interrupted by Yosemite Sam and Elmer Fudd (dressed in tuxedos) shooting his teeth out with "Misrlou" playing in the background. This is a clear reference to Pulp Fiction (1995).
The 5 stars who have their talent stolen are Charles Barkley, Larry Johnson, Muggsy Bogues, Patrick Ewing and Shawn Bradley. None of them ever won an NBA Championship, largely due to Michael Jordan winning six championships with the Bulls. 1991 to 1993 and 1996 to 1998.
Previously, Bugs Bunny and Michael Jordan had teamed up in Nike commercials for the Air Jordan VII (1992) and Air Jordan VIII (1993), with Bugs nicknamed "Hare Jordan". Bugs has since been an honorary member of Jordan Brand, and in 2015 as part of Jordan Brand's 30th anniversary, Nike released a Bugs-themed mid-top version of the Air Jordan I called the Air Jordan I Mid Hare, along with a Lola-themed and female-geared equivalent called the Air Jordan I Mid Lola.
There was originally going to be a scene in the movie featuring MC Skat Kat and the Stray Mob, an animated hip-hop group who worked with Paula Abdul on some of her music, but they were completely cut out of the script.
The pseudo-scientific names of the aliens on the "Aliens From Moron Mountain" blueprint in the brainstorming session are: Wormius Repulsus (green), Newtus Grodius (purple), Dopus Elongatus (blue), Rotundus Tempermentus (orange), and Minimus Whinius (magenta).
The final scene of the game mirrors Michael Jordan's actual first home game back during his 1995 comeback - which was actually against the Orlando Magic on March 24th. The Magic won that game 106-99 in what was Jordan's first game at the United Center after the Bulls had played in Chicago Stadium earlier in Jordan's career. (The Magic - who included Shaquille O'Neal and Anfernee 'Penny' Hardaway, who met on the set of Blue Chips (1994), leading to O'Neal encouraging the Magic to draft Hardaway - also beat the Bulls in six games in the Eastern Conference Semifinals that year. It marked the last playoff series that the Bulls lost with Jordan on their roster. The following year, the Bulls won a record 72 games during the regular season, swept the Magic in the conference finals and then beat the Seattle Supersonics - now the Oklahoma City Thunder - in six games to become NBA champions once again.) In real life, Jordan's first game back in the NBA was March 19th against the Indiana Pacers at Market Square Arena (since replaced by Bankers Life Fieldhouse, formerly known as Conseco Fieldhouse) in Indianapolis.
CASTLE THUNDER: First heard during a "film-within-a-film" for one second when Michael's kids are flipping through the TV channels and lightning appears on the screen. It's then briefly heard again for one second when the Nerdlucks begin to transform into the Monstars.
Danny DeVito (voice of animated character Swackhammer, leader of the Nerdlucks/Monstars) later appeared in fellow Warner Bros. animated film Smallfoot (2018) 22 years later with LeBron James, who appeared alongside the Looney Tunes in Space Jam 2 (2021) 25 years later.
The trivia item below may give away important plot points.
After the big game, Michael returns the talent to the pros from which they were stolen. In that scene, Mugsy says that the glowing ball that contains the talent looks like something out of Star Trek. Ironically Star Trek: First Contact (1996) was released in theaters the following week.