Here’s a list of (at least partially) animated features distributed or produced by 20th Century Fox and Warner Brothers from the mid-70s onward, followed by more on Ralph Bakshi. For whatever reason, Bakshi, Fox, and Warners like more than a little live action with their animation. If anyone has seen or enjoyed any of these, comments are most welcome.
[b]Distributed by Fox /b
Wizards (Ralph Bakshi, animation/live action hybrid)
Raggedy Ann & Andy: A Musical Adventure (animation bookended by live action)
Fire and Ice (Ralph Bakshi and Frank Frazetta, animation and rotoscoping)
FernGully: The Last Rainforest (Bill Kroyer)
Once Upon a Forest
The Pagemaster (via Turner Features Animation, animation bookended by live action)
[b]Fox Animation via Sullivan Bluth /b
Anastasia
FernGully 2: The Magical Rescue
Bartok the Magnificent
Titan A.E.
[b]Distributed by Warner Brothers /b
Thumbelina (via Sullivan Bluth, rotoscoping)
The Pebble and the Penguin (via Sullivan Bluth, int’l distribution)
The King and I (via Richard Rich)
[b]Warner Brothers Feature Animation /b
Space Jam (animation/live action mix)
Cats Don’t Dance (via Turner Features Animation)
Quest for Camelot (Bill Kroyer, partially)
The Iron Giant
Osmosis Jones (animation/live action mix)
Looney Tunes: Back In Action (animation/live action mix)
[b]Distributed by Warner Brothers /b
The Polar Express (Tom Hanks)
Corpse Bride (Tim Burton, stop-motion animation)
The Ant Bully (Tom Hanks)
Happy Feet (Animal Logic, motion capture and some live action)
Legend of the Guardians: The Owls of Ga’Hoole (Animal Logic)
Happy Feet Two (Dr. D Studios, [reportedly] motion capture and some live action)
[b]Fox Animation Studios /b
Fantastic Mr. Fox (stop-motion animation)
Diary of a Wimpy Kid (animation/live action mix)
Ralph Bakshi also directed The Lord of the Rings (United Artists, 1978), American Pop (Columbia, 1981), Hey Good Lookin’ (Warners, 1982), and Cool World (Paramount, 1992), all of which blend animation and live action one way or another.