Towards the end of the basketball game, Daffy asks Bill Murray, "Exactly how did you get here?" Murray responds, "The producer is a friend of mine," referring to producer Ivan Reitman, who worked with Murray on Arrête de ramer, t'es sur le sable (1979), Les bleus (1981), and the Ghostbusters movies.
The concept for this movie originated from a series of highly popular live-action/animated sci-fi sports comedy Nike commercial ads for Air Jordan shoes titled: "Hare Jordan" and "Aerospace Jordan" where Bugs Bunny and Michael Jordan faced off against Marvin the Martian and his alien henchmen in basketball to stop him from stealing Nike shoes.
Michael Jordan actually wore his North Carolina Tar Heel college basketball shorts under his Chicago Bulls uniform every game as a good luck charm.
Back in the late 1980s, Disney studios asked Warner Brothers if they could use some of the Looney Tunes characters for the Disney film Qui veut la peau de Roger Rabbit (1988). Warner Brothers obliged and were in the belief there was a reciprocal gentleman's agreement, which there was but under the old Disney management who were long gone by the time this film started production. However when Warner started work on this film, they asked Disney to return the favor and let them use a few Disney cartoon characters (Mickey Mouse was originally intended to be the match referee). Disney reneged on the agreement, a move which annoyed but didn't entirely surprise Warner Brothers. This explains some of the not so subtle digs at Disney within this film.
When Stanley comes into Michael's hotel room, he says "C'mon, Michael, it's game time. Get your Hanes on, lace up your Nikes, grab your Wheaties and your Gatorade; we'll pick up a Big Mac on the way to the ballpark." All of those things were products that Michael Jordan had been a spokesman for around that time.