Here is some material (some a bit old, last one is a video):<p><a href="http://linuxdevcenter.com/pub/a/linux/2001/11/29/ruby.html" rel="nofollow">http://linuxdevcenter.com/pub/a/linux/2001/11/29/ruby.html</a><p><a href="http://www.artima.com/intv/ruby.html" rel="nofollow">http://www.artima.com/intv/ruby.html</a><p><a href="http://www.youtube.com/watch?v=oEkJvvGEtB4" rel="nofollow">http://www.youtube.com/watch?v=oEkJvvGEtB4</a>