One of Smalltalk's original design goals was to make learning easier; now the people behind the OLPC are using Scratch (built in Smalltalk) to accomplish that goal:

Scratch is a (highly-)visual programming language aimed at the every man - even if the every man has yet to reach his ninth birthday. With this WYSIWYG environment - available as a free download here - you can piece together interactive digital apps in much the same way you'd piece together LEGOs. And that's not hyperbole. At a workshop this morning inside San Jose's Fairmount Hotel, more than a few programming novices built their own mini-apps in (literally) a matter of minutes.