On most pulls I'll go something like this:
Shockwave(after moving/turning to make sure the mobs are all lined up properly)
Shield Block after the Shockwave stun wears off(extra dmg from Damage Shield)
After that I pretty much just spam tab and Cleave while Shield Slamming, Revenging, and Devastating mobs where my threat lead isn't as high.
HoR is tough because the mobs are so spread out that it's harder to really get into that kind of a rotation. What I do is Heroic Throw the Priest, Thunder Clap the melee guys, and Charge the Hunter while putting Spell Reflect up to get some aggro on the Mage. You won't really be aoe-ing here, I usually have DPS single target focus firing in this instance.