This is an iPad app that has just been released in the past couple of days.

http://twolivesleft.com/Codify/

It's the first app that allows you to write and execute code directly on the iPad and includes touch and accelerometer input.

You can write graphical simulations, games, etc...

Very good (I would imagine) for kids wanting to get into programming.

It uses LUA which seems to be a light weihgt, high level (3.5GL?) language.

Worth a look for anyone interested in programming (or getting into programming).