Lets Go Ride a Bike Summer Games is to "leave a nice note on a bike, or say hi to a cyclist at a red light." I routinely try and chat it up with my fellow commuters. Since my commute is along a highly traveled bike route in a residential area, its often easy to chat with folks and occassionally I run into people I know. It's always interesting to see how folks react to conversation when stopped at lights. Some are obviously in the zone and don't want to be bothered. Most are friendly and occassionally I find someone who's as big of a bike geek as I am and we talk until I get to my street.
In the mornings I often end up with groups of kids and their parents on the way to school. It's great to chat it up with the kids who are obviously having a great time biking to school. My neighborhood is very bike friendly. There's a monthly family bike ride which takes place each summer and has been steadily in play for eight years now. We try to participate as often as possible. It's a great way to connect with our neighbors and the local businesses are fantastic supporters. We also have the Bike Depot which is a fantastic resource for everyone in the community.