The cost may be a bit much for some of you, but I love Swrve pants for riding. I ride around 5k miles per year in any and all weather (I live in Chicago) and am sort of a power user of bike stuff. I got the first pair when I found them on sale at an LBS, and since acquired four more, in two weights and various colors. I don't mind riding in jeans but these are the most comfortable pants I have for riding. They look like normal pants until you look closely (e.g. a slight dart in the knees, reflective belt loops), but have plenty of nice little features designed for cycling. I wear them to work all the time, and they have also become my favorite travel pants. I also wear them (in cool-enough weather) for long recreational rides, and when I rode Barry-Roubaix last year I was surely the only guy riding in the same clothes he had worn to work the day before (I can get away with wearing my Ibex merino tops to work.)