[Photo: Carey Jones]

Pull a pint and raise your glass: Guinness turns 250 years old today, marking a quarter-millennium (!) since Arthur Guinness took over a brewery at St. James's Gate, in Dublin... on a 9,000 year lease. (Here's hoping that gives us 8,750 more years of the black stuff.)

Honoring the occasion? Join drinkers across the world in a toast today at 17:59, Dublin time. (That's a minute to one in the afternoon on the East Coast. But nothing wrong with that—Guinness is good for you.)