I use:
1) Onebag (not shown in screenshots but I hope you know what it is from the name)
2) Omen
3) DBM
4) ORA2- not show because I'm not in a raid
5) Recount
6) Questhelper (see map & GPS arrow- invaluable)
7) Lightheaded (thats the one you can see in the screenie of my quest log- it puts Thottbott in your game, basically
8) Necrosis (warlock mod)
9) Ratingsbuster (not show- equipment compare for when loot drops)
10) Fishing Buddy (not shown, makes fishing a lot quicker & easier)
11) Raid Tracker- not showing a screenie of this one. It keeps attendance of every raid & group down to who joined and left at what time. Also tracks who greeded/needed, who won what, what got DE'd, what went to guild bank, and many other useful things