In three winters of commuting, this is the first time I've had to ride in actual crystallized rain. Other than a single incident (see prior comment), it was FUN! Of course, some lessons learned and challenges to be overcome:
--Sticky s&^# sticks to the eyeglasses; need to have a wipe handy;
--Sticky s*%^ also sticks to the headlight; need to clean often;
--Low gears and slow speed are my friend;
--If I go clipless at some point, save the old platorm pedals for winter. Did foot-down stops lots of times at intersections. Always assume the other guy isn't going to stop;
--Be careful putting the foot down. Feet slide just as easily as tires do!