My Colorado Café Scientifique talk this past Monday went very well, with about 100 people crammed upstairs at Brooklyn's and firing off over an hour's worth of questions at yours truly. It was great fun, and many thanks to Eric Meer and John Cohen for all their hard work setting it up and running the two incarnations of Colorado Café Scientifique.
If you live in the Denver and have an interest in science, definitely try to attend their lectures; I can guarantee you won't regret it. I also wasn't aware of this, but I was told that the Colorado Café is one of the biggest in North America, and its monthly talks are always very well attended. Yet another reason to like life in Denver!