Hey,
after reading this thread (Ulduar:Skip to Yogg Saron(Rogue only)) I thought about using the method in other places and I came up with the Black Temple. I still need to get the blades, so I tried to shadow step the door to Mother Shahraz which is easily doable. You can kill Illidan in less than 10 minutes with this, as you can skip the 4 most annoying bosses of the instance.
Your way to profit:
1. Kill Naj'entus and Supremus on your way up to the door to Mother Shahraz
2. Pull some of the trash mobs
3. Run forth and back at the door so that one of the mobs clips into it
4. Use Shadow Step now
5. ...
6. Profit!
All trash and bosses will be up, there is no requirement to do the usual kill bosses to open door routine to spawn them.
I hope this will ease your grind :-) And please rep that other guy who came up with the step through door idea. I just figured another place to use it.
Cheers