Definitely a fun talk! Worth watching several times. Some people will want to look at the Feb 2013 paper (with the same title) that the talk was based on, which let's you go through the reasoning step by step and look up the references to earlier research that it's based on.
The paper ("Death and resurrection of the Zero-th…") was on our "Most Important Paper" poll for first quarter 2013 and is currently in
second place:
https://www.physicsforums.com/showthread.php?p=4399478#post4399478
The poll is still open. You can still put in a vote for it if you'd like

Go here:
https://www.physicsforums.com/showthread.php?t=681598
and look down the list of candidates---it's about six up from the bottom.
Jul, I actually think this is a really important paper---it says what time and temperature are in relativistic setting, or takes a darn good shot at it. Glad you posted the 20 minute YouTube version!