American Energy Use I:

wonk blog chart

American Energy Use II:

Lawernce Livermore Labs flowcharts (in Quads)

World Energy Use:

I've seen this image in several places. This seems like a good version. It's original source is IEA supposedly.

Earth's Energy Budget:

Note scale of three primary sources of energy that power the planet. Think about the delicacy of the balance.

Physics Energy Tutorial:

..General reference for the way physics looks at energy....

Human Energy Generation:

..just some examples....(note Stan Micklavzina from UO on the citation list -- awesome Stan!!)