I'm just recalling the days when Radio Shack used to sell pocket computers. (Many moons ago, w/ only a few K of memory.) They had the ability to write small programs on Pocket computer. Maybe it's just nostalgic, but I alway thought that was handy. (Through the fog of my memory.) Is there any capability like that for an Iphone?
Edit: I can kinda understand not allowing a like a GameBoy emulator on the App-store, it's kinda like saying your ok with people loading "ROMs" and could get them in trouble. When you start profitting from an Emulator the license holders get pissy, just think about "Bleem" and Sony. Sony buried those guys. I suppose Javascript is better than nothing. What about Java in a sandbox? Or if they want something they aren't afraid is going to cannibalise there market, a BASIC interpreter.