In residency, it seemed like often attendings have a lot of opinions about how specific things should be done and then make the same mistakes themselves.
For example, I got yelled at once because I forgot to put the date and time on one of my progress notes. This was apparently a really serious mistake (OK, I know it's a JCAHO violation), although the attending who spotted it didn't bother to fix it when she saw it. She said that I had to go back and fix it, except... get this, she couldn't remember the approximate date that the note was written or which patient it was. So she wanted me to look through every single patient's chart to find this note with no date.
So while I was searching through one patient's chart while the attending was writing her note, I found no less than TEN notes written by the attending with no date OR time. Naturally, I couldn't keep my mouth shut about it. As I fixed each one, I kept saying, "Look! Here's another one you didn't write the date on!" All I got was an, "Oops." There were also about half a dozen notes from consultants that were lacking the date and time.