In reply to SenzuBean:
Yeah, those are good for practicing flags. On a much more general note: initially, my thought process went smt like this - "oohhh yeah I remember those videos, I practice a fair bit, I had progress in flagging and I believe I am good in them and don't need to spend time on those drills anymore. Given what grades I climb, of course I know what flagging is and I can do it good".... indeed, I guess I can do it good, but actually everybody can learn so much more at any given point on almost any given technique. I think it was from the Power Company podcast when Kris was interviewing the guys from Position Over Everything, when one of them said - I just realized how much better I can dropknee (the guy is climbing smt like v10 as far as I recall)... so yeah, you can never achieve a "good enough" mastery in certain climbing techniques. I also recall a pro female sport climber going for some tricky bouldering and realizing that she could not (in her words) heelhook at all!!!
Another example that I remembered now (also quite funny imo):
from 6:00 onwards - "come on, come on,... yes, good, good... concentrate...I am on top rope, toooprope"
Lesson - Positive self talk and mind game