Crusader Strike + Trinkets
If you have trinkets with use effect and keep forgetting about them, like me, this macro helps to keep them on cooldown.
Will use first the trinket in the first slot, if that on cooldown the 2nd.
The start attack is in there for the case of mob switch and its on cooldown to instantly start white attacks.
I choose Crusader Strike for it because its a main attack regularly used.
Direct link to this macro:
http://www.wowuse.com/macros/paladin/crusader-strike-trinkets/18/
Divine Shield cast+cancel
Press it with left button will cast Divine Shield, pressing right button will cancel it.
You can do it with pressing same button too, but I prefer this to not accidently press twice and cancel the bubble too early.
Direct link to this macro:
http://www.wowuse.com/macros/paladin/divine-shield-castcancel/19/