I don't get the whole Twitter thing, but I love these Twitter-ized summaries of famous films. (All under 140 characters, of course.) Some favorites:
Star Wars: "Young boy abducted by old man, falls in love with sister, refuses family business, kills father, dances with little bears."
The Lion King: "Hamlet, with lions, in Africa."
Twilight: "Sulky teen fancies local vampire. They do not have sex."
Back to the Future: "Young boy gets in car with old scientist guy. He takes him forward in time. No one questions their friendship."