A couple weeks ago I participated in a Onyxia-10 run. It was a pug, although about half of us were from the same guild.
My nooby action was dying nearly every attempt of this before we finally got her down. I kept running ahead too fast during the pull, so that was pretty embarrassing.
sweatdrop When we finally beat her, one of my guildies noticed a
druid in the raid had shown up in mostly blue and green gear. He had some trouble with the knowledge that "dragon + tail = tail hits people".
Oh, and for back in the day n00b moments: Pulling an entire cave of trolls that murdered me and my boyfriend when my bear pet fell off a bridge.
xd