I know a lot of people here have gone colder, but I felt proud of myself this morning. At 6:15 AM when I rode in to work it was -30C, with a wind chill of -39. My commute takes about 45 minutes each way.
To tell you the truth, it wasn't that bad. My toes started to get a bit cold near the end, and I had to take my glasses off about a km in though. Oh, and my right eye froze shut for a bit (may have to invest in some goggles).