Only time I don't mind is when two tanks Nin or /Nin are dual tanking and need to know when each others' shadows are down.
Out of all the annoying emotes for a job, the worst is those Smns.
/s "Goddess of the Wind, come to me and assist my friends in battle!"
/s "You have done well, return to the heavens from where you came from."
Only exception I will make is:
/s "I choose you, Carbychu!"