I just couldn't pick a favorite. They are all good!
"Who knew it would be so much fun to watch a baby learn to grab her toes."
Of all the great taglines here, I really think yours is the VERY BEST, and coming, as it does, from a professional engineer, it is really a great statement to the power of babies.
A lifetime of experience, in just a few months!
Merry Christmas, and properous taglines to you and yours in '05!