I came across this site:
http://gilesbowkett.blogspot.com/2008/04/ruby-golf-ascii-sierpinski-triangle.html

And it got me thinking. Is there a site somewhere dedicated solely to
ridiculously cool ruby snippets? Also, it would be nice if they
explained it :-)

I'm not talking about useful snippets, or important snippets, I'm
talking about purely "cool" or purely "beautiful" or whatever
snippets.

I came across another site where somebody wrote a boggle solver in
Ruby and five lines of code. I thought that was pretty cool too.