Pangrams

A pangram (Greek: pan gramma, “every letter”), or holoalphabetic sentence, is a sentence using every letter of the alphabet at least once. Pangrams have been used to display typefaces, test equipment, and develop skills in handwriting, calligraphy, and keyboarding.
Some examples:

• in English, “The quick brown fox jumps over the lazy dog” (all 26 letters).
• in English, “How quickly daft jumping zebras vex!” (all 26 letters).
• in German, “Victor jagt zwölf Boxkämpfer quer über den Sylter Deich” (every umlaut).

The quick-brown-fox pangram, which has been used since at least the late 19th century, was utilized by Western Union to test Telex/TWX data communication equipment for accuracy and reliability, and is now used by a number of computer programs (most notably the font viewer built into Microsoft Windows) to display computer fonts. The German Victor-jagt pangram, used since before 1800, contains all the letters, including the 3 umlaut letters: ä, ö, ü.

Short pangrams tend to be more interesting and more difficult to write because the English language uses some of the same letters (especially vowels) much more frequently than others. Longer pangrams may afford more opportunity for humor, cleverness, or thoughtfulness. In a sense, the pangram is the opposite of the lipogram, in which the aim is to omit one or more letters. A perfect pangram in the English language contains every letter of the alphabet only once and can be considered an anagram of the alphabet. A common example is the phrase “Cwm fjord bank glyphs vext quiz”.

http://en.wikipedia.org/wiki/Pangram