1. Basically every single piece of VFX terminology that I know now is because of this podcast. More importantly, everything I now know about VFX in general--the state of the industry, what it's like to work in Hollywood, etc. etc. Listening to the guys talk about their plight as VFX artists gave me an insight into the industry that I otherwise would never have gotten.
2. How to express myself when talking about filmmaking and storytelling in general. I already knew a lot of the concepts that are talked about on the show when I started listening, but to be able to codify them and explain why they are the way they are, and by extension why certain stories do or do not work, hugely helped my critical thinking abilities and my ability to lay out a coherent argument as to why a story is the way it is.
3. In line with the above--how to think critically in general. As a filmgoer, certainly, but in the other areas of my life as well. I entered DiF as a creationist conservative who thought the Star Wars prequels were awesome, I left it completely the inverse. I can't ever thank them enough for that.