Maxing DPS with Disengage in ICC

I use disengage in every ICC fight except the gunship. It's a very fast way to move and not delay shots.

I don't try to use it for running straight faster though. I'm a combo mouse and keyboard mover. It works well for me. And running without stuttering your movement delays auto shots and lowers your DPS. So I'll usually do a slightly not straight move. I run straight, stutter, strafe-turn-disengage then mouse-turn back. Depending on cooldowns, I might also let steady-shot turn me as its castbar progresses.

Here's how I use disengage in ICC.

Marrowgar
There is often a lot of distance to cover. Plus it's great to clear frost lines.

Lady Deathwhisper
I generally DPS LDW and am responsible for the back guy (who is tanked). I hit disengage after DPS'ng and mouse turn in midair with a MD on the rear tank. After downing the rear mob, I quite literally strafe some side mobs on the return to the boss.

Saurfang
Disengage straight back if my bloodbeast gets too close. This happens surprisingly little. But in a pinch it's great with a slow trap and a concussion shot.

Rotface
Move out of center in one click, just aim your butt for something not overly green.

Festergut
If I'm not the collapse spot, it's how I move to my spot after a collapse. Quick rotate, disengage, quick rotate (possibly via steady shot which will rotate you while winding your cast bar).

Putricide
No specific use here, but it's often to get in range of a dps target instead of moving away. You do have to choose one or another and it's probably just easier for me to properly disengage when I'm under less pressure. I do occasionally use it in the final burn phase.

Dreamwalker
I'm usually on kiting and safe-killing duty of the explosive zombies. It's great for kiting. It's also great for getting to DPS a blazing skeleton on the other side of the very large room.

Blood Princes
I'm not usually on kinetic bombs. One of the luxuries of having a bunch of hunters. So I use it to get to far range of the everyone-spread-out shock vortex.

Blood Queen
Again, I use it to get to far range for a spread-out before the fear timer hits. Basically it just gives me a little more time DPS'ng the boss.

Sindragosa
I haven't killed her in 25man yet. Chalk it up to business travel and light attendance? But it's pretty common to pop it after the pull-in.

Lich King
Supposedly if you are carried by the Valkyries, you can get a priests' levitate and disengage back from the cliff if they drop you. I tried to do it without a friendly priest and it just launched me under the platform for a long long time. I did use it in other ways. But I used it sparingly. I used it for positioning on killing the Valkyries. I used it in killing and kiting orbs. I used it when a Valkyrie grabbed someone and then we had to move for the black ooze. But that's luck of the timer. Generally, I didn't use it anywhere near a ledge. With a 25 second cooldown on Disengage and a 15 minute plus fight you could use it a silly number of times.