I was actually wanting to start a thread about this today too. I've got more than enough hit from gear, so I took all my points out of the +hit talent and put 4 pts into Unrelenting storm. With 4 pts in there I can see a HUGE difference in my mana efficiency. I don't have mana problems nearly as severe as I used to.

I just got the 4 piece 50% uninteruption bonus on all of my shamans. I'm strongly considering taking all my points out of Eye of the Storm and putting them into the Elemental Shields talent. I play with a Palaidn with the improved concentration aura. So thats 50% interuption resistence there, plus my 4 piece set bonus means 100% interuption protection to Lightning bolt, correct?