Part of my job is planning calendar lineups, including what's running on the homepage and when, which means I'm pretty familiar with random dates and obscure holidays, but am also pretty good at telling you what day of the week the 5th lands on during any given month.
This afternoon, I just noticed that 2009 has three Friday the 13ths in it: February, March, and November. Doesn't that seem odd? Either 2009 has a little curse hanging over it (a priest-shaped one, perhaps?), or this Friday the 13th thing is more common than I remember it being. Either way, be careful out there!