Great idea! I'm actually not using TinyMCE or an editor like that because the format I write my notes in is Markdown. There aren't too great of editors for that, but it does make things like syntax highlighting really easy from a code perspective.
I'll add both a syntax highlighting episode and TinyMCE episode to the todo list. :)
I just started to cover authorization with an episode on CanCanCan! https://gorails.com/episodes/authorization-with-cancancan
I think we'll definitely have to cover both Sunspot and ElasticSearch. These are almost required for any applications these days. Great suggestion!