The animation films I like are:
- Princess Mononoke (one of the rare anime movies I ever liked)
- Metropolis (another anime I liked)
- Heavy Metal 2000
I can't remember anything else. I found Disney's Lilo and Stich pretty funny, as well as Lion King 1/2 but those are not serious.
Also IMHO Looney Tunes are better than jetsons/flintstones/pokemon/digimon/whateverstupidcartoon there is.
Flintstones was good enough for the 80s. Original idea and such, but of all the hanna barbera cartoons, Tom and Jerry are the best.
