Lion King, The (Disney) Easter Egg - A Hidden Mickey

If you haven't heard of the Hidden Mickeys, you're missing out on something great. Tons of Mickey Mouse silhouettes, whether of the head or the whole body, are hidden in each movie Disney makes, as well as various merchandise and all kinds of other things.
One example of a Hidden Mickey in The Lion King appears while Mufasa gives Simba the "Great Kings of the Past" speech. Watch the starry sky above, and on the left, at just the right moment the stars will outline Mickey's whole body. It looks like an earlier-style Mickey, but it's definitely Mickey.
There are many others in this film and any other film Disney makes, cartoon or otherwise, including Star Wars: The Phantom Menace! Look for them!