This video hardly captures it.
I actually re-read part of the book to Ellie in hopes of a repeat performance, but the encore wasn't as good as the original.
Today, as I read Ellie "Chicka Chicka Boom Boom" for the eight millionth time, every time I said "Boom Boom" she dove to the ground. When I got to the line about "Mamas and papas and uncles and aunts/Hug their little dears and dust their pants" she acted out the story.
By far her favorite book.