I've played monk for a whie and have created a funny build for monk, it's very effective against the crowd.
Purpose of this build is maxize your dodge chance and use the Mantra Evasion with Backlash to cause dmg (78% of weapon dmg) and use your imaging when you have around 10 mobs hit you, and 4/6 of them are miss and then ... boom all mobs die.
You can view the build and the on field battle follow this link.
This build just for fun and certainly it's not the best build. All comment are welcome :D