Dear co-worker,
Something is wrong in your head if you think that just because I'm crazy about bicycling that I will laugh at an animation of a cyclist breaking traffic rules and being hit by a car, or that I will be interested in a report about a terrorist who happened to be seen on a bicycle, or any other of those little gruesome tidbits you think are newsworthy.

Even though we are supposed to work together, I'll delete most emails from you, so if you have something work-related to share, you better tell me in person.