Comment Tux Paint, Scratch, and Google Earth (Score 2, Insightful) 742
I teach Technology in an elementary school and the only 3 programs I install on computers (besides my enforced MS Office Install) are Tux Paint [http://www.tuxpaint.org/download/] (don't forget the stamps!), Scratch [http://scratch.mit.edu/], and Google Earth. Just make sure you have tolerance for sound with Tux Paint and Scratch. Tux Paint will end up with a never ending cacaphony of flushing toilets and frogs, and Scratch couldleave someone wondering why you hear a looped cat meowing with drums in the background. Google Earth needs no explanation.