Narihiro Nakamura has 2 videos available on Confreaks.TV. Their most popular video is Parallel worlds of CRuby's GC which has been viewed 2,483 times since it was posted on 10/21/2011.
Symbol GC at Ruby Kaigi 2014 70 total views
Parallel worlds of CRuby's GC at Ruby Conference 2011 2,483 total views