I've found it useful as a druid (others may too), to have a macro I call "whocon".
Commands:
I put it on my hotbar and mapped that slot to an extra button on my mouse, but it should be useful just in the hotbar as well. Clicking this with a player targeted will show their /who info, their con, and if you have sense magic, any buffs/debuffs on them all at once. The only weird part is if you click this on a mob, the who part of it just does an entire zone /who. It still shows the single mob's con and buffs/debuffs last.