Ask HN: Has anyone used Smalltalk for Graphics?

Does anyone here have experience with smalltalk for developing Gui-applications? (cross platform, or any at all)

I'm kinda interested in it, since the protoype system in Javascript is supposedly derived from the one in Smalltalk, and there seem to be quite the community around the language.

I'd be glad to hear your anecdotes/experiences with the language, doesn't have to be Gui-stuff.