I really started to think about this ever since somebody in a previous thread (pertaining to the best/worst vocal recasts in animation history) that mentioned The Real Adventures of Jonny Quest. Basically, the first and second seasons are for all intensive purposes, separate shows. Both seasons have radically different animation styles and voice casts. To make a long story short, Turner Broadcasting fired the first team (who worked on what would be the first season) for being behind schedule. The replacement team finshed the show in what would turn out to be, classified as the second season.
The most obvious example of an extremely troubled animated production is The Thief and the Cobbler (or when it was first released in the United States in 1995, Arabian Knight). I can't really properly explain all that happened without anything right in front of me. In a nutshell, the project dated as far back as 1969. It was animator Richard Williams' lifelong pet project. I think that it was initially going to be released by Warner Bros. but Williams couldn't keep up with their time table (especially with Disney's Aladdin being on the horizon). Then the project ultimately fell into the hands of Miramax, who got somebody else to finish it. The end result, is kind of a piss-poor Aladdin wannabe (e.g. with musical numbers and what not) instead of what Richard Williams originally envisioned (for instance, the protagonist originally, wasn't supposed to speak). It was also Vincent Price's (who played the rhyming talking villain) last released (he passed away two year's prior to Arabian Knight's release, but supposedly recorded his vocal tracks as far back as the '60s) work.
Ren & Stimpy is another obvious example. Nickelodeon fires John K. and Spumco in part for being late/slow production wise. Nick also censored or banned certain episodes for content (i.e. the "Man's Best Friend" episode).
The Jetsons movie from 1990 had to cope with both the deaths of Mel Blanc (Mr. Spacely) and George O'Hanlon (George Jetson) before production was finished. There was also the utterly egregious decision by the powers that be to replace Janet Waldo (Judy Jetson) with Tiffany Darwish (Tiffany was at the peak of her success/popularity/notority as a pop starlet/teen idol and Universal wanted to use her as a way to draw in more youngsters), even though Waldo had completed her vocal tracks.
The most obvious example of an extremely troubled animated production is The Thief and the Cobbler (or when it was first released in the United States in 1995, Arabian Knight). I can't really properly explain all that happened without anything right in front of me. In a nutshell, the project dated as far back as 1969. It was animator Richard Williams' lifelong pet project. I think that it was initially going to be released by Warner Bros. but Williams couldn't keep up with their time table (especially with Disney's Aladdin being on the horizon). Then the project ultimately fell into the hands of Miramax, who got somebody else to finish it. The end result, is kind of a piss-poor Aladdin wannabe (e.g. with musical numbers and what not) instead of what Richard Williams originally envisioned (for instance, the protagonist originally, wasn't supposed to speak). It was also Vincent Price's (who played the rhyming talking villain) last released (he passed away two year's prior to Arabian Knight's release, but supposedly recorded his vocal tracks as far back as the '60s) work.
Ren & Stimpy is another obvious example. Nickelodeon fires John K. and Spumco in part for being late/slow production wise. Nick also censored or banned certain episodes for content (i.e. the "Man's Best Friend" episode).
The Jetsons movie from 1990 had to cope with both the deaths of Mel Blanc (Mr. Spacely) and George O'Hanlon (George Jetson) before production was finished. There was also the utterly egregious decision by the powers that be to replace Janet Waldo (Judy Jetson) with Tiffany Darwish (Tiffany was at the peak of her success/popularity/notority as a pop starlet/teen idol and Universal wanted to use her as a way to draw in more youngsters), even though Waldo had completed her vocal tracks.