Something with immediate results.<p>Mine were HTML, TI-83 Basic, and Visual Basic. All of these could get something visible and interactive relatively quickly.<p>These days, I would say things like Javascript/Ruby/Python, while more simple than C/C++/Java, still don't have a direct pipeline to results that matter (for a learner).<p>Pygame would be my choice if ¥ou had to go the scripting route.