Turtle!

Its like Jeroo, but more fun. I honestly like this a lot, though perhaps not as much as just straight programming because of all of the extra rules, but at the same time drawing shapes using turtles is fun, so I'm not going to complain. I particularly like how it gives something that I think is necessary for a lot of beginners in programming, which is context. Not much context, mind, no grand sweeping plot or memorable characters, but some ability to visualize and conceptualize how the code translates onto the screen, which helps make the program make more sense.