I don't remember where I saw it, but a little while back I remember reading about an addon that allows you to set 'profiles' for your UI. So for example you could have a raid profile which will enable all your necessary addons and then auction addons and carbonite etc. get disabled. Then I can load my city profile which will enable them again but disable ones such as my boss mods.
Does anybody know where I can find this addon, would save me a heap of time before raids.