Check out the The Simpson's dialogue-free, short film "The Longest Day Care." It's a sequel to Maggie's previous plot line in "A Streetcar Named Marge." Watch as Maggie takes on the nefarious Baby Gerald, while learning a little something about developmental biology. This Oscar-nominated short is long on talent, James L. Brooks produced and Hans Zimmer and Jim Dooley are responsible for the music (which is fantastic with lots of great little classic nods).
If you're wondering why the lice jump out at you it's because this originally aired before Ice Age: Continental Drift... in 3D.