Teaching Programming Skills to Children?

KlaatuVN asks: "My younger siblings are asking for ways to learn to program. If I remember correctly, when I was younger I started programming by writing games like 'Lemonade Stand' in BASIC for the Commodore 64. Short of finding a Commodore 64 emulator and digging up some old BASIC programming books somewhere, what do you think is a good way of teaching children to program? I'm not trying to start a 'language war', but that does enter into it. Should I start with a scripting language? What, O Wise Slashdot Readers, are your opinions?" When I was just starting out in computers, I remember LOGO being a big help in teaching me the logic skills I would eventually use as a programmer. I know LOGO is still around, but it would be interesting to note if there are other similar projects like it. What tools, and programs would you use to teach programming skills to interested youngsters?