Tossing in my 2 cp here, aimed at melee dps classes.
-Buffs-
Unity - Shaman. If no Shaman around, get Mammoth's Strength from a Druid.
Predator/Strength - Ranger. (Brells will block Strength, so click it off before asking). If no Ranger, get Verve from a Beastlord. If no Bst, use teh click from Shrunken Goblin Head Earring.
Haste (duh) - Enchanter is best, but Shaman/Beastlord works if no Enc.
Don't forget your Overhaste and + Atk clickies.
-
Burning teh Boss down
When it comes time to burn, your discipline useage/timing is critical, along with group makeup.
http://www.monkly-business.net/forums/showthread.php?t=28149The above thread is for Monks specifically, but tells a great deal about disc useage strategy.
Group makeup is key for making everyone go OOOOO at your parse. Shaman w/2.0 and a Bard. The bard increases your overall performance, while the Shm 2.0 enhances your disc useage, and has Champion/Lynx to increase your awesomeness. Zer/Bst/Rog also contribute to your dps with Auras/Disciplines.
WATCH YOUR AGRO! - Dead = 0 dps.