Thank you both for taking the time to list those out. It is also nice to see others' screenshots :) I go back and forth on setting up my system like this where I download everything under the sun and configure them (on an off/boring gaming day) only to have a major patch come out and break my mods. Then I get tired of the errors/warnings and I remove almost all of them and get back to basics. For that reason, I got used to healing instances/raids without any mod to assist. It is better for the whole raid if you have some though, so I'm not trying to say "be a purist" ... it is just that one needs to be able to still heal, buff, debuff, cleanse, etc. effectively while you are waiting for patches to things like Decursive et al.
Anyway, I liked both of your posts because Chuucky's really helped with the "other" side of WoW gaming -- the AH and trades game. And lsfreak's presented a nice adventuring setup.
I'll try to configure mine a bit more and post a screenshot and list too. I do plan on installing a mod recommended by one of our raid leaders. Here is his reasoning for using it in Karazhan:
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FocusFrame This should help tremendously with dealing with the arcane bolts. By setting your /focus to Aran, you will have a separate portrait to be able to see what he is casting - and to whom (by having target of target on.) Thus, when we see an arcane bolt being cast, we can start spam healing that player.
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More to come.