Edgar Allan Poe did something unusual for writers of his time: he used a narrator in a story to describe what was happening.

VOA: special.2009.02.02

Barbara Jordan,however, explained later that she wanted to be something unusual.

VOA: special.2010.05.09

"Often time terrorism is beaten not by the government but by regular people who have the courage to report something unusual to the authorities,"

VOA: standard.2009.09.21

Here,Homer did something very unusual.

VOA: special.2010.07.25