Pangram \PAN-gruhm\, noun:
A sentence, verse, etc., that includes all the letters of the alphabet.
Example: "The quick brown fox jumps over the lazy dog."
The ideal pangram contains each letter only once, but it is difficult to compose a meaningful sentence of this kind.
-- Thomas Burns McArthur, Feri McArthur, The Oxford companion to the English language
~See now I'm kind of compelled to try making up my own pangram. :) ~