Thanks to twitter.... I cam across animation - ish. It is software you need to buy... but it looks like a load of fun. Not something I would use in the classroom as my curriculum is more about programming but this would make a cool extra-curricular lesson on two! They have videos to show you how to use it - in fact there are 12 lesson videos. So you are definitely well supported. Most importantly I think students would be really engaged with this software without a doubt! Will keep you posted as to whether I take the leap and buy it/use it, I do think the boys would love it though so it is very tempting!!