Healing macro. If you point on a player or a player frame it casts Holy Light on the one (WoW Gold)you point. But if you do not point on any one<a 

 it checks you target and if its friendly it heals your target. At last if no one off the earlier conditions was met it heals your self.
/cast [target=mouseover,exists,help] Holy Light; [help] Holy Light; [target=player] Holy Light

The same as above but Flash of Light
/cast [target=mouseover,exists,help] Flash of Light; [help]Flash of Light; [target=player] Flash of Light

If you want to down rank you can try this one.
/cast [target=mouseover,exists,help] Holy Light(Rank 7); [help] Holy Light(Rank 7); [target=player] Holy Light(Rank 7)

One for Righteous Defense. If you got a friendly player or NPC it casts RD on your target. Else it checks if you have the mouse pointer on a player or player frame and casts RD on him. If on one of the earlier conditions was met its tries to cast RD on you targets target. (Have not tried this one yet)
/cast [help] Righteous Defense; [target=mouseover,exists,help] Righteous Defense; [target=targettarget,exists,help] Righteous Defense

Casting BoP on self if you not got a friendly player targeted.
/cast [help]Blessing of Protection;[target=player] Blessing of Protection

Casting BoF on self if you not got a friendly player targeted.
/cast [help]Blessing of Freedom;[target=player]Blessing of Freedom

New Macro for buffig. It castes greater Blessing on frendly target if you press down the shift key but if you got harm or notarget then it casts it no your self.
/cast [help,nomodifier] Blessing of Might; [target=player,nomodifier] Blessing of Might; [target=none,modifier:shift] Greater Blessing of Might;[help] Greater Blessing of Might;[target=player] Greater Blessing of Might

/cast [help,nomodifier] Blessing of Wisdom; [target=player,nomodifier] Blessing of Wisdom; [target=none,modifier:shift] Greater Blessing of Wisdom;[help] Greater Blessing of Wisdom;[target=player] Greater Blessing of Wisdom

/cast [help,nomodifier] Blessing of Kings; [target=player,nomodifier] Blessing of Kings; [target=none,modifier:shift] Greater Blessing of Kings;[help] Greater Blessing of Kings;[target=player] Greater Blessing of Kings