Two talks on clojure.spec have just been uploaded to youtube: Strange Loop 2016: Stuart Halloway - "Agility & Robustness: Clojure spec" https://www.youtube.com/watch?v=VNTQ-M_uSo8 ClojuTRE 2016: Arne Brasseur - "Introduction to clojure.spec" https://www.youtube.com/watch?v=-MeOPF94LhI

Chicago Clojure also recently had a meeting on Spec, which was posted to Youtube a couple weeks ago - http://vimeo.com/181231654