New York Times columnist Thomas Friedman was attacked with pies by environmental activists during a speech about energy at Brown University in 2008, the same year this photo was taken. (Jennifer S. Altman / For The Times)
Former Enron CEO Jeffrey Skilling, shown here appearing before Congress in February 2002, was targeted by a pie the previous year at a public hearing in San Francisco. (Kenneth Lambert / Associated Press)
In 2004, Phillip Edgar Smith and William Zachary Wolff of Tucson, Ariz., were arrested after throwing custard cream pies at author Ann Coulter (pictured in 2003) during a speech at the University of Arizona. (Jim Cooper / Associated Press)
