My favourite childhood movie is definitely Spirit: Stallion of the Cimarron. Such a great story, and absolutely wonderful music too. Some of the songs from that movie's soundtrack are still my favourite songs, even though my music tastes have adjusted quite a bit since then.
Even so, I really liked Hercules, the Aristocats and Lady and the Vagabond. I quite enjoyed Mulan and Bambi too.
And Winnie the Pooh. Let's not forget Winnie the Pooh. I still cherish my Pooh mug. xD