George H.W. Bush.As noted in our blog about a Douglas County school allowing parents to opt out of letting their kids watch President Barack Obama's speech to children on Tuesday, we pointed out that other Commanders-in-Chief have directly addressed younglings -- among them President George W. Bush, who asked America's kids to each donate a dollar to the plight of children in Afghanistan back in 2001. But a closer comparison can be made to a September 1991 teleconference conducted by Duby