Eyegore

It may be the lazy man's answer, but I find mashing the hell outta this baby serves me well.

#show Shield Slam
/startattack
/cast Shield Block
/use Gnomeregan Auto-Blocker 600
/castsequence reset=6 Shield Slam, Devastate, Devastate, Revenge


edit* or to be less glib about it, I find that, for me at least, using this macro to take care of the general stuff like keeping shield block up and spamming my aggro gen abilities allows me to focus my attention on other things (fight specific variables/timers, positioning, what have you). Maybe others can keep track of that all at once, I find this invaluable however. (does give you some spam about the trinket of course if you don't have it on/it's down, you could take that line out. Again, that just gives me one less thing to keep track of when I am wearing my aggro set.)