From Spaceweather.com
JUPITER AT ITS BEST: Tonight, Sept. 20-21, Earth and Jupiter converge for their closest encounter in decades. The giant planet will soar across the sky at midnight, outshining everything except the Moon itself. Although big, bright Jupiter will remain close to Earth for weeks to come, tonight is the closest of all. Check http://spaceweather.com for images and more information.
I will be watching.
I was out last night and noticed Jupiter was very bright. Alas tonight will not be good viewing as we get hit with Tropical Storm Igor.