A Visit to the Gates / Hillman Centers.
Last night I just missed Bill Gates' appearance in the Burg. He'd tossed a bit of his billions to CMU, and stopped in to dedicate the Gates Center for Computer Science.

What we did get to see some cool new toys they had trotted out for him.

Snackbot gave me a nice apple and a really bad joke. Video: Snackbot on Snackbot. Snackbot on the Gates Center

We heard but didn't get to visit with the bagpipe playing robot. John will b thrilled that we saw cell phone games to teach Indian kids english.

But the highlight was Claytronics, self assembling solids that will produce 3-d solid objects from your computer. on.

CSI: THE EXPERIENCE - About the Exhibit, Exhibit Preview
The Ft Worth Museum of SciTech, Rice U's Center for Technology and Learning, Left Brain Media, and others bring learners this interactive.
I haven't played it in depth; just wanted to point out the two most obvious features, a map with popups and videos with sound.