This is a good opportunity to introduce your friends to LessWrong: "Hey, did you know today is the day Stanislav Petrov saved the world? http://lesswrong.com/lw/jq/926_is_petrov_day/" Chance are, they will click around.
I actually did submit a link to EY's post to Hacker News, where it seemed to do well: http://news.ycombinator.com/item?id=3039221
A reminder for everyone: on this day in 1983, Stanislav Petrov saved the world.
It occurs to me this time around that there's an interesting relationship here - 9/26 is forgotten, while 9/11 is remembered. Do something charitable, and not patriotic, sometime today.