Aug 2016  Enumerator::Lazy
          SF.rb, San Francisco
          slides: speakerdeck.com/sferik/enumerator-lazy
Dec 2015  Ruby Trivia 3
          Berlin Ruby User Group, Berlin
          slides: speakerdeck.com/sferik/ruby-trivia-3
Nov 2015  The Value of Being Lazy, or How I Made OpenStruct 10X Faster
          Rails Israel, Tel Aviv
          slides: speakerdeck.com/sferik/the-value-of-being-lazy
          video:  youtube.com/watch?v=6lQeBfSVrpk
Nov 2015  Ruby Trivia 2
          Berlin Ruby User Group, Berlin
          slides: speakerdeck.com/sferik/ruby-trivia-2
Oct 2015  Ruby Trivia
          Berlin Ruby User Group, Berlin
          slides: speakerdeck.com/sferik/ruby-trivia
Jul 2015  An Introduction to Crystal
          PolyConf, Poznań
          video:  youtube.com/watch?v=Ysm4IU4aWoQ
May 2015  The Crystal Programming Language
          RubyC, Kyiv
          video:  youtube.com/watch?v=5-_CWyrpIBk
Apr 2015  Writing Fast Ruby
          RubyConf India, Goa
          slides: speakerdeck.com/sferik/writing-fast-ruby
Apr 2015  Symbols (lightning talk)
          RubyConf India, Goa
          slides: speakerdeck.com/sferik/symbols
Mar 2015  Secrets to Powerful APIs (panel)
          SXSW, Austin
          link:   schedule.sxsw.com/2015/events/event_IAP35000
Feb 2015  Towards a Higher-Level Language
          RubyConf Australia, Melbourne
          video:  youtube.com/watch?v=cjPybeAeKDQ
Oct 2014  Content Negotiation for REST APIs (closing keynote)
          Nordic APIs Platform Summit, Stockholm
          slides: speakerdeck.com/sferik/content-negotiation-for-rest-apis
          video:  youtube.com/watch?v=xRyCykwqDEk
Oct 2014  Writing Fast Ruby
          RubyConf Portugal, Braga
          slides: speakerdeck.com/sferik/writing-fast-ruby
Sep 2014  Writing Fast Ruby
          RailsClub, Moscow
          slides: speakerdeck.com/sferik/writing-fast-ruby
          video:  youtube.com/watch?v=IXODb6uk26o
Sep 2014  Writing Fast Ruby
          Barcelona Ruby Conference, Barcelona
          slides: speakerdeck.com/sferik/writing-fast-ruby
          video:  youtube.com/watch?v=fGFM_UrSp70
Apr 2014  Mutation Testing with Mutant
          RailsConf, Chicago
          slides: speakerdeck.com/sferik/mutation-testing-with-mutant
          video:  youtube.com/watch?v=WccaOMuf01Y
Mar 2014  Streaming Audio: Putting the Media in Hypermedia APIs (panel)
          API Strategy & Practice, Amsterdam
Oct 2013  A Brief History of Technology Booms
          dotRB, Paris
          video:  youtube.com/watch?v=iXkPty3y7gA
Sep 2012  Writing a Rails Engine
          GoGaRuCo, San Francisco
          video:  youtube.com/watch?v=Rvxcc46fox0
Aug 2012  Writing a Rails Engine
          eurucamp, Berlin
Apr 2011  Cultivating an Open-Source Community
          Red Dirt RubyConf, Oklahoma City
          slides: slideshare.net/slideshow/cultivating-an-opensource-community-7708825/7708825
Apr 2011  GUI Programming with MacRuby
          Red Dirt RubyConf, Oklahoma City
          slides: slideshare.net/slideshow/gui-programming-with-macruby-7571580/7571580
Mar 2011  GUI Programming with MacRuby
          Ruby on Ales, Bend, Oregon
          slides: slideshare.net/slideshow/gui-programming-with-macruby-7571580/7571580
          video:  youtube.com/watch?v=VSpZIkmywQM

Podcasts:
Feb 2016  The Crystal Programming Language (Ruby Rogues, episode 248)
          topenddevs.com/podcasts/ruby-rogues/248-rr-the-crystal-programming-language-with-erik-michaels-ober
Oct 2013  Maintaining the twitter gem and RailsAdmin (Ruby Rogues, episode 127)
          topenddevs.com/podcasts/ruby-rogues/127-rr-erik-michaels-ober
Jul 2011  Code for America (The Changelog, episode 65)
          changelog.com/podcast/65