Discussing addons is a tricky business. On the one hand, Mat McCurley does his weekly Reader UI of the Week segment, which is a sure sign that some of WoW Insider's readership are fans of customized UIs. On the other, we're all aware from comments, forum posts, and blogs that there are players who find anything outside of the default Blizzard UI to be sacrilege, and that using addons detracts from the experience of playing the game.
This is a post about which addons I feel are most beneficial to playing an elemental shaman. If you're a fan of totally customized UIs, these are the addons I think would help the most in improving your performance on an elemental shaman. If you're not a fan of addons or customizing your UI, that's cool, too. This just might not be the post for you, but I hope you read on and decide for yourself!