Perhaps the ultimate in mentalising speed-learning: Anthony Bateman demonstrating MBT at a conference. The set-up was ridiculous, with just 10 minutes to do a role-play with an (awesome) actress. Many thanks to Prof Bateman for his permission to include this powerful, and poignant, video. (For dull, technical reasons the film is split into 3 sections below - firstly the introduction, describing the role-play scenario; secondly the role-play; thirdly the discussion after the role-play.)
And yet more top of the range training resources: slides from Anthony Bateman and Peter Fonagy's training sessions. We could claim privileged access, or deny hacking, pilfering and non-aggravated theft. Actually, they're all freely (and generously) available on Anthony Bateman's UCL homepage.