I dabble in SmallTalk for hobby stuff, and it actually seems to be the other way around these days: People find SmallTalk after becoming enamored with Ruby. That's definitely my story.
It's how I found SmallTalk back in the original pickaxe days, and Lisp, and Perl. Pretty serious expansion of consciousness compared to Basic, Pascal & C++.
While I understand that objective-c has clear heritage from smalltalk, this comparison always struck me as farcical. Objective-C yields very few of the benefits of a proper Smalltalk VM outside of message passing, and i suppose some of the syntax. Meanwhile the burden of having to deal with C is absolutely staggering in comparison to the benefits.
Oh, absolutely—this wasn't meant as a value judgement. I've written my fair share of objective-c for this very reason (well, that and wanting to write native GUIs ages ago). I'm just saying the parallels between it and smalltalk are highly exaggerated.