For the Pixar opening, I love the animation and character design of the lamp itself, if we include the fact that it jumps on the I like that with the squash and stretch effect it really brings home this childlike wonder feel.
For this animation, I love this one potion where it times the sound effects within the animation itself. The simple shapes and images are also done in a way that makes it seem different from the bulk of what I saw during research. A nice plus to all that as well is the use of 3d animation in the opening scene.
I really like the way that they slowly bring in the new subject with a slow growth to me it seems done in a way that isn't too much or too little, like I remember seeing some where they would have different timings for each part of the image they bring in and it made it look ugly overall