[obombration]

Agreed. I taught a CS club to 4th and 5th graders during college and they all loved Scratch. It's very easy to get going with audio, images, animation, etc., which got them really interested quickly. Even for older (middle school aged) kids I'd probably start with Scratch because it teaches most of the CS concepts you'd use in any other language, but doesn't require the tedious environment setup (editor, compiler/interpreter, etc.) that "real" languages need. Spark their interest using the concepts, then sprinkle in the boring parts.