At the weekend, Dr T. and I were in Curry's in Worthing for various dull reasons. One thing that we noticed straight away is that all the small children in the store were clustered around the iPads.
I think that sometimes we, as adults, forget how non-intuitive most traditional computer interfaces are. They have to be learnt - the vocabulary of left click and right click and double click takes time to develop - and I still see adults double-clicking on web links.
By contrast, children can just pick up the iPad and use it, as this video shows. I suspect this is because of the immediacy of the user experience - you're actually touching what you want to change, rather than remotely controlling a mouse pointer that implements you commands.
This is, I feel, important. I suspect much more mainstream computing will end up with a touch interfaces that the monitor/keyboard/mouse combo…