I've had a couple, so can't point any one video. I make a lot of mistakes and since my videos are tutorials, I don't put the mistakes in. Sometimes the mistake is a major screwup where I'm done with half the tutorial and realize I did something wrong at the beginning and there's absolutely no way to recover from that but to restart. Those situations are rare now because I've improved over time and do much better preparation before recording the tutorial.
However, I recently started doing Dev Vlogs, and I plan to start showing bloopers from the next episode onwards.