Without a doubt @chanjagg at TC 19. Everything in this is so simple and accessible. Really inspired me to be more creative in design and (I think) helped me improve my design skills!

Here is the workbook of the presentation!

second half of @moritz_stefaner's OpenVisConf keynote (the train stuff): haven't seen others talk so clearly about creating visual vocabularies or making multiple views work coherently in a single workflow always play an excerpt from it in my vis class

There is an excellent one done by @SimonBeaumont04 and @SParsonsDataViz at last years Tableau conference. I thought it may be on YouTube but I can’t seem to find it now unfortunately