This is an excellent explanation of why the film Who Framed Roger Rabbit is not just one of the best movies ever made but also one of the most technically proficient films to combine animation and live-action in the same frame.
I grew up watching this movie a lot and as a kid I think I just really enjoyed it for the cartoons-in-real-life aspect. As a child, why wouldn't I be utterly amazed at this on-screen magic? It only served to raise hopes that maybe cartoon characters could exist in real life. And as I got older, the plot of the film just made the movie even more interesting (especially when I learned that the streetcar sub-plot was partially based on some real-life events of car companies in LA lobbying to destroy the streetcar industry to sell more cars and build more roads).
Anyway, I guess what I'm saying is, this film truly still feels like magic after all these years mainly because it is done so so so well. It's not just some artist drawing over a film cell blindly. No, it's the concerted effort to make the cartoon characters live and breathe and interact with real life objects and people in front of them that makes this movie worth watching nearly 30 years after its release.