This just in from the front lines of the War on the Unusual: [nbcnews.com]
University of Pennsylvania economics professor Guido Menzio was solving a set of differential equations on a plane departing the Philadelphia airport when the woman next to him surreptitiously passed a note to a flight attendant telling them she thought he was a terrorist because of the strange things he was writing on a pad of paper. The plane returned to the gate where he was questioned. At least this time the pilot had enough sense not to kick [independent.co.uk] him [independent.co.uk] off [independent.co.uk] the [usatoday.com] flight. [cnn.com]
Remember folks, if you see something say something!