I suggested something like this a while back
I possess a surprising (psychopathic) knowledge of modern firearms, which is always useful for scaring/boring people. And occasionally being lame and pointing out little inaccuracies in the mass media, e.g. "the picture shows an HK54 - look at that rifle magazine - while in the game he's clearly holding an MP5 with its distinctive curved magazine, which holds the much smaller 9x19 Parabellum round.", which usually elicits a resigned sigh (though I have educated some others in the ways of modern infantry weapons). This nit-picking is mainly because my dad does it, and as I grew up it became ingrained. It makes me feel I have a purpose in life.

I can also drum on the spaces between the knuckles of my right hand and twist my tongue 180 degrees round. I'm also surprisingly good at deciphering and remembering song lyrics and lame obscure facts in general, eg Gen. H.Norman Schwarzkopf, Jr., of 1991 Gulf war fame is the son of H.Norman Schwarzkopf, Sr., who as the Superintendent of the New Jersey State Police oversaw the investigation of the Lindbergh kidnapping. Coincidentally, he too was posted to the Middle East, helping to make Iran an Allied protectorate.

Since acquiring a camera phone, I have also discovered a talent for compromising photojournalism, eg capturing documentary proof of an infamous incident in which a certain Mr L who, while paralytically drunk on tequila slammers, took the novelty plastic sombrero cap from the tequila bottle and put it on his (cough)head.

Apologies for length, girth and mess.
(Radio Free iPods "Fickt nicht mit dem Raketenmensch!", Fri 24 Jun 2005, 17:26, Reply)