Almost cold this morning. Had a great ride lost in thought most of the way. A mountain biker decided to try and dust me on the frontage road. He cleared the last car barrier down the block (the frontage roads are broken up with barriers every so often so cars can't use them as a Thru way) and just as I was about to catch him something wierd happens to his front wheel and he endos! His bike flew up in the air, it was really surreal seeing this happen on a flat piece of pavement in the middle of the city and no apparent cause. He said he was OK. I told him his crash looked pretty impressive (he looked kind of like one of those "Do the Dew" guys so I guess that might help his ego a little) and rode on. I think he was an ASU student (maybe he'd been partying a little hard over the weekend), still if he had hit his head I might have been there awhile (no helmet). Anyway, wonderful commute.