mlimber writes "Comet McNaught (C/2006 P1), the brightest comet in decades, is currently visible to the naked eye in the early evening and early morning sky for the northern hemisphere. The northern latitudes have the best view, but it can be seen even in the southern hemisphere during the day with the right equipment. Another image is available as NASA's astronomy picture of the day."
Here is a graphic of the comet's evening location
from 40 degrees north latitude.