Diablo 3 Hero ( Try it out, they have a 60 day full refund!). There is a small Quickening trick you can use for Monks in Diablo 3 at the moment. If you use the quickening rune for Fists of Thunder, it currently gives 15 spirit on EVERY critical hit you make, instead of just FOT crits.
The trick now is, that by using it with Sweeping Wind or Exploding Palm, it gives you a huge amount of spirit. Try using it with 4 or more mobs, and you can constantly stay on max spirit and spam other spells as well.
With builds like THIS, you can constantly spam Cyclone Strike and Mantra of Healing and never go out of spirit while getting all of your health back trough Transcendence.
I don't think this is a bug (other classes have similar talents with similar effect), but I don't think monk is viable in inferno without doing this. I found it when I was in A4 hell and thought it was the most OP thing ever, now it just feels required.