Today during some down time I showed my 9-year-old daughter the basics of Excel. She thought it was pretty cool how you could reference cells. When I showed her how to reference a whole other worksheet, you'd have thought she had just discovered fire or something.
Within 15 minutes she had figured out how to create graphs.
I further impressed her by showing her some conditional formatting.
Come to think of it, the when I first started using Lotus 1-2-3 (for DOS, of course), I thought it was pretty cool, too.
Sometimes kids are so easy to impress. I'll miss being able to do that when she gets older.