I've watched screencasts from about half of this list (I am a bit of a junkie...) and I can say, without a doubt, that the best one of the bunch is Destroy All

I've watched screencasts from about half of this list (I am a bit of a junkie...) and I can say, without a doubt, that the best one of the bunch is Destroy All Software. Others may be better if you are new to program and want specific help with a certain tech (Ember.js, Rails, etc) but if you want the most bang for your buck, DAS is where it's at.