Regarding PAs, the worst is when I'm sitting in the back and hear the Capt do a pre-push back PA and he includes his and his F/O's resume of flying experience (e.g. F-16s and XXXXX, XX years of experience, XXXXX flight hours, etc., etc., etc.). Fortunately I can count the number of times this has happened on one hand.

Me in the back (better than being in the front) in this situation: