As I was paying for my all-you-can-eat Mediterranean buffet today, which came to a total of $10.66, Dan mentioned that 1066 was a good year, primarily because it was the year that the Crab Nebula exploded. I told him he was full of it and he bet me tomorrow's lunch that he was right.

Just for the record, the supernova that would become the Crab Nebula became visible on Earth in 1054.

This is the sort of manly thing that my totally un-nerdy friends and I bet on.