One of my very favorite Disney films is an old one. It doesn't have singing, it doesn't have princesses and no real magic to be found but the magic of science.
Disney's The Great Mouse Detective is based on a book series written by Eve Titus which is based on the Sherlock Holmes stories by Sir Arthur Conan Doyle. As a Sherlock Holmes fan, I love all the references made to the originals. I even checked one of Titus's books out of the library, once. It was adorable.
As for one that isn't animated, I remember liking "Bed knobs and Broomsticks". That one was cute. Didn't that one also have the actor who played Mr. Banks and a few animated bits mixed in with the live action? It's been so long since I've seen it.