Comment Witches of Karres is my favorite (Score 1) 726
The Witches of Karres by James H. Schmitz. A wonderful not too long story about magic and spaceship technology geared for the younger crowd (but I love it).
Anything by Edgar Rice Burroughs, but especially the John Carter of Mars series.
The Lost World by Arthur Conan Doyle (and you can suggest Sherlock Holmes as well).
Down Town by Viido Polikarpus and Tappan King.
The Earthsea Trilogy by Ursula LeGuin.
All very interesting and short enough, as well as cool.