Help me help Lili

Hi, dear reader! I was watching an old video of an even older movie last week: The Invisible Man with Claude Rains. Lili was really excited by all the lab work and chemistry-like stuff Rains and Henry Travers perform, because she loves to pour together different liquids to see what will happen (usually, the yield is a sorta gross mixture of something solid, yogurt and/or milk).
I've been trying to think of other movies or books with chemistry themes or scenes that would be interesting for a four-year-old (or appropriate for that matter, thereby ruling out say, CSI: Miami or Re-Animator), and have come up with precious few examples:

• The Man In the White Suit
• The Absent-Minded Professor
• Back To the Future
• Jurassic Park
• Donovan's Brain
• Monkey Business

Would anyone be kind enough to add to my list by clicking "reply" below? Can you think of portrayals of scientists that aren't "mad" or "absent-minded"? If you add a personal note about the book or movie, that would be even better!
Most gratefully, Plumnbagel