For those of you who live in Southern CA, I wanted to make you aware that next weekend (Saturday and Sunday, May 3rd and 4th, 9 AM-5 PM) is the Jet Propulsion Laboratory's (JPL) annual open house. We went on a field trip there last December and my eight year old daughter LOVED it. I would highly recommend it.
Any hey, it's free. Can't beat that!
Full details and directions are available on the JPL web site.