Classic:
* The quick brown fox jumps over the lazy dog.
More Creative:
* Pack my box with five dozen liquor jugs.
* The five boxing wizards jump quickly.
* Waltz, bad nymph, for quick jigs vex.
* Cwm fjord bank glyphs vext quiz. (This one uses more uncommon letters, but it's grammatically correct!)
Funny:
* "Jockey, my friend, I've just bought a new car!"
Let me know if you'd like to see more examples!