I played around a bit with Io not too long ago, after someone recommended it to me over python (in general) for doing async network i/o. It seemed like a pretty solid language and had a decent library, too.

I don't have much to say about Ioke other than the fact that, personally, I doubt I would have chosen to re-write the language for some arguably minor changes. Of course, I'm sure the article doesn't get into all the differences.