We also went to Stanford University a few times while Alex's mum was here. In fact we got quite into it, with tours of the Rodin sculptures at the Art centre, a student-led tour of the university highlights and lunches at the campus coffee house. It's a really beautiful campus, with lots of sandstone buildings with terracotta roofs (I've since been lucky enough to fly over the university and it looks like a lovely old mediterranean village from above). It has a very sad history - the wealthy Stanford family founded the university over a hundred years ago (making it a pretty historic place by American standards) to honour their son who died aged fifteen on a european tour. Stanford University is very wealthy and influential in the area, it owns over 8,000 acres adjacent to Palo Alto including a shopping mall.
We also went to the Museum of Computer History which was absolutely awesome. Lots of old computers and alpha geeks.