GLaDOS teaches science

When two techs working at NASA hook up their latest AI, they end up with a power-hungry GLaDOS (the evil AI from Valve's Portal video game, voiced by Ellen McLain).  In an effort to prove she's not evil, GLaDOS explains what fusion and fission are.  Got to admit, it's a great way to teach science.

From the youtube page:

This video was produced by the education & public outreach department of NASA's Spitzer Space Telescope, focusing on STEM education.