Peter Norvig gave a presentation on Google Labs. I'd already seen or played with a lot of what he talked about, like Google Suggest and Google Maps. There were other's however, that I wasn't aware of and thought were pretty cool. For example, Google Personalized let's you set a profile and then move a slider bar to say how much that profile influences the current results. For example, if I search for "web scheme" in Google, the top result is about a color scheme editor for the web. However, if I do the same search on Personalized and move the slider bad bar, more relevant (to me) results move to the top since I've identified "programming" as one of the things I'm interested in on my Google profile.