Yes he has, on several occasions. At least for Prince and the Pauper (half an hour Mickey Mouse [or so] special) from 1990. A very good short. For Aladdin he did character designs. And I think he worked for Dreamworks also for some time. Timo Ronkanien, Daan Jippes also worked on Dsney"s Pochohontis and Alladin. Daan jippes is working for Dreamworks again thats what I heard