I woke up this morning to a text message that said "Hack between MacGregor and Tang" and of course had to check it out.
Check out this site for more details:
MIT hackers put a 'GO SOX' banner over New House on the morning of Thursday the 25th in recognition of the Boston Red Sox competing in the 2007 Baseball World Series. The banner, which was clearly visible from the Boston side of the Charles River, was strung between MacGregor and Tang Hall dormitories—a distance of well over a thousand feet.
I love hackers!