I always think it's fun to drive down random streets in the commercial areas of Mt. View, Sunnyvale and San Jose and see the crazy mix of famous, has-been, and still unknown companies' signs on the buildings.
Here's an example. Java Drive (no relation to the language) in Sunnyvale is five blocks long. According to Google Maps, the following businesses are on it. (Plus I'm pretty sure there's at least one Yahoo! building there.)
A guy who used to work for me now works for PAN and their product is very cool, from what I've seen. You should check them out if you're a network guy and pay attention to the company in general
