A 'panagram' is...

"The quick brown fox jumps over the lazy dog" is commonly uses to display font samples. A popular sentence that uses all the letters in the english alphabet, a phrase called a panagram. Due to its shortness and coherence, it has become widely known and is often used in visual arts. Many moons ago Audi also had a very fun series of illustrated ads based that gave nod to it...

http://justcreative.com/2008/09/23/top-7-fonts-used-by-professionals-in-graphic-design-2/