Love the list. Many of my personal favorites on there. The inclusion of "Beavis and Butt-Head Do America" makes me very happy. Lol. (And don't worry - the fact that you left off most of Pixar's work is refreshing and makes me kinda happy.

)
If I did a list, it would probably look something like this.
HONORABLE MENTION:
Pink Floyd - The Wall (Only partially animated compared to other mixed films so leaving it off feels fair. )
There are also many short animated films I would recommend as well (my favorite being Bimbo's Initiation, The Sandman, The Tell-Tale Heart (1953), Wallace and Gromit in The Wrong Trousers and Betty Boop, M.D.)
The TV Series: Courage the Cowardly Dog... especially the episodes The Mask and Freaky Fred
Anyway, my own top 30...
30. Heavy Traffic
29. An American Tail
28. The Prince of Egypt
27. South Park: Bigger, Longer and Uncut
26. The Secret of NIMH
25. Cinderella
24. Batman: Mask of the Phantasm
23. Watership Down
22. Beavis and Butt-head Do America
21. Who Framed Roger Rabbit
20. My Neighbor Totoro
19. Beauty and the Beast
18. Fritz the Cat
17. Waking Life
16. Akira
15. Snow White and the Seven Dwarfs
14. The Nightmare Before Christmas
13. The Little Mermaid
12. The Many Adventures of Winnie the Pooh
11. The Hunchback of Notre Dame
10. Felidae
09. Toy Story / Toy Story 2
08. American Pop
07. Spirited Away
06. The Plague Dogs
05. The Triplets of Belleville
04. Fantastic Planet
03. Fantasia
02. Grave of the Fireflies
01. Pinocchio
Tony, have you seen any of Bakashi's work except for "Fritz the Cat"? If so - I suggest you start going through his other films - they are mind-f*cking works of genius! Haha.