Sure,

I can send a picture of my interface map, but i dont use half the addons that are in there (like questhelper i only use on alts and such.) So i thought i would say my highly used addons:

AG_Unitframes (Thats also the raid group with only my toons in it in the right bottom corner.
Proximo
Trinity Bars (I am going for bongos soon though)
Spellalert
Atlasloot
Multiboxer_v2
Ohnoes (although i dont have it enabled in the video)
I dont use SCT. But i might go with it when my 5th shaman is leveled up.
Cartographer
ArenaCountDown
!BugGrabber
ElkBuffBars (for the totem icons etc)
Backseat Quester
Omen (for in raids/instances with my paladin)

I also recommend XP_Gain_Notify
You can let your alts say in partchat howmuch exp they need left and such. And also easy for boosting, so you dont have to max their regions every time.

I hope this helped a lot,

-Negativ1337 A.k.A. Totemic