Get your mind in the Gutter, agree that Programming is Not Math, be a RubyCritic, master Vim Plugins for Ruby, review 3 Ways to Create Classes in Ruby, and take a trip to RailsPacific.
Enforcing your environment with ENVied, easier payment integration with Payola, faster logic with pippi, multithreading in MRI, and Practicing Rails.
Aimee and Nate talk about UltraHook, Using Capybara in Integration Tests, Background Processing with Einhorn, Barcelona Ruby Conf Top 5, and Raptor.
Unary Operators, Writing fast Ruby, each_with_object, ES6 Transpiler and HStore
RailsRumble, Ruby Motion for Rails devs, how Ruby Hashes work, how to deal with data migrations, clean up your routes file, and get better logs.