I have recently found an addon named Opie that has made my Warlock days much much more enjoyable.
What is does is sorts out any spells you want in very cute rings that appear on screen only when you call for them.
This way you can store up to 20+ spells!. It is great in both PvP and PvE and totally customizable, so i thought id share it with all you folks.
Without further explanation, you can find this lovely addon on curse.com