Star Wars Adapters

Remember in the first Star Wars (#4, A New Hope), when Luke, Han, Ben, et al get stuck in the tractor beam of the Death Star? They find a room and R2D2 plugs into the computer outlet. I was just thinking that it was a damn good thing that R2D2 had the right plug, otherwise the movie would have been pretty short and would have sucked. R2 would have had to scoot around the Death Star looking for a London Drugs so he could buy an Empirical adapter.