Here's one for your list:
Mongolian Earthworm Cleave.
Enhancement Shaman + Balance Druid + Discipline Priest/Holy Paladin
I love it simply for the name.
Edit: Also, I didn't see WMP on your list. That's Warrior + Mage + Holy Paladin (or I guess Discipline Priest would work too).
Seen it posted once, but I've done Ebolacleave(Diseasecleave) previously
Ebolacleave - Feral/DK/Healer(Paladin)
Hydrixi (Spirestone-US) - 3x Gladiator Resto Shaman (Account not active)
A "cleave" a couple of guildies and I came up with for the lols was "Haiticleave". Dual Ele Sham, Disc Priest. Good times were had by all.
Ret/spriest/healer should be named "Red Bull Cleave".
Dunno if this was mentioned:
Ebola cleave - dk, feral, healer - due to all the bleeds and diseases
edit: damn just seen it posted above