Just a quick search on YouTube for Chris Crawford yields a few results [0] [1] [2].

[0] https://www.youtube.com/watch?v=nMg2_teHVTs

[1] https://www.youtube.com/watch?v=ajz_1TqccYA

[2] https://www.youtube.com/watch?v=CBrj4S24074

[3] https://www.youtube.com/watch?v=HFPs9MUvR3U