Set up target marks.
Let the CCers pull with their CC
Commanding/Battle Shout. This puts you on the remaining mobs' aggro table immediately, and they should start running to you if they're not casters.
Heroic Throw any remaining casters.
In the rare situation where there are 2 un-CC'd casters, wait until the first reaches you and starts casting, then charge the other caster, shield bash, and walk it back to the other.
When all or most of the mobs have reached you, TC/SW/Rend/TC and go into your normal AoE rotation.
This works for me on 99% of pulls. As long as you CC the casters, it's usually quite easy to let everyone else run to you.
Kathy, I said, "I'm lost" though I knew she was sleeping
I'm empty and aching and I don't know why
Counting the cars on the New Jersey Turnpike
They've all gone to look for America