A few nights ago in capoeira, we videotaped a short roda. Afterwards, we watched it while one of our instructors provided feedback.
Of course, I hate watching myself on video (who doesn't?), whether it's footage of me playing capoeira or teaching a graduate class. Every mistake seems magnified, and (as someone at Vanderbilt's Center for Teaching said to me), everyone thinks their butt looks too big. Sure enough, there was plenty to critique in my play.
However, I was pleasantly shocked by the video. Since I had last been captured on either still or moving film, my form had improved remarkably. My entire posture and carriage looked different. Frankly, I was possibly too relieved to fully absorb the critique I received.