on Marine at the base to the Oak Street Bridge. A guy riding a black DRZ lost the front end in front of me as he tried to turn onto a side street. He took a roll or two and got up. Some lady in a car at the intersection couldn't believe her eyes when he dumped it! Probably made her dump as well! The guy seemed alright as I passed by (wasn't hurt by the way he was moving around and picking up his bike).