http://www.curse-gaming.com/en/wow/addo ... stbar.html
Natur's cast Bar. Excellent PVP and PVE mod. when a enemy or player has a buff or ability on a timer this gives you a movable visiible "cast bar" of it. For example in pvp a warrior pops berserker rage you get a bar that coutns up to 10 secodns when the effect will fade ( and thus you can fear again). Also shows thigns like duration fo poly/shacke. In pve I find it particularly useful for the drakes in BWL because I am primarily the OT healer there. What this allows me to do is see the oncomign wingbuffet. Thus I can break i nto Los on the OTs, shield them, and ehal them for the few secodns they tank during wingbuffet, then duck back behind cover. essentially it makes healing them preemptively childsplay.
http://www.curse-gaming.com/en/wow/addo ... craft.html
Theory craft. ZOMG this mod is a dream. Ever wonder what affect all that + heal gear was having on your heals? this mod will tell you. It'll also tell you how much +1 crit will be worth compared + healing. In short it shows a wealth of information that any knowledgable could have figured out, but now any idiot can quickly see what his +healing is actually causing him to ehal for.
It also has options to see what a different set of gear or talent spec would have on your spell as well. Also works equally well with melee attacks and such.
I don't use whisper cast or decursive, but both are popular. If you want to get really invovled I use clickheal to speed up the time it takes me to have a heal inc to a player in need, but I'm still up in the air about it since until properly set up it causes just as many problems as it fixes, and can't be turned off with a / command.