Mark Hamill not only voices Snakebite Scruggs, but also Shaggy and Scooby's airport supervisor, the ghosts of Morgan Moonscar and the Confederate general, and a plantation worker.
In the Mexican Spanish dub, Scooby-Doo and Jacques are both voiced by Francisco Colmenero, and Ricardo Tejedo voices Fred Jones and Snakebite Scruggs.
Frank Welker not only voices Fred but also Simone's cats, Snakebite's pet pig Mojo, and multiple zombies.
Bad Export for You: The film originally received a 12 rating in the UK. It had to be cut down by about 3 minutes to get a PG.
Career Resurrection: This was the movie that managed to revive interest in the Scooby-Doo franchise after a period of no new material, leading to a long-running series of Direct-to-Video movies that is still going to this day.
Real Life Writes the Plot: Casey Kasem refused to return to voice Shaggy unless the character became vegetarian like him. As Shaggy eats crawfish in the film, he is now voiced by Billy West.
Role Reprisal: Frank Welker reprises the role of Fred, making him the only actor from the original series to return. BJ Ward also returns as Velma after previously voicing the character in a crossover episode of Johnny Bravo the previous year. Heather North was also supposed to reprise her role of Daphne after also reprising the role in the Johnny Bravo episode, but was replaced during production.
Unintentional Period Piece: Shaggy and Scooby would not have gotten away with their airport antics (especially Scooby constantly sniffing and barking at baggages) in a post-9/11 world. The camera is also very late 90s, and the gang losing it to quicksand means that they have no footage at all for Daphne's show; these days everything would be digital and backed up on computers and hard-drives easily after each filming day - as opposed to having to get the tapes processed back then. Also Simone and Lena's scheme to trap people on the island would be harder to pull off when most people would have smart phones these days and could call for help.
What Could Have Been: Tara Strong says that she and the other voice actors were originally going to speak in Cajun accents. She herself says she found the accent very difficult and Jim Cummings, who is Cajun himself, said they didn't sound authentic, so they just went with typical Louisiana accents.