Machida vs Rua next, according to what I've read on worldofcombat:
World of Combat » Mauricio Shogun Rua to fight Lyoto The Dragon Machida at UFC 104
The thing is: Karate's not good in general in MMA. However, if you can learn the very important things to play the game (Jiu-Jitsu, Boxing, Kick boxing or Muay Thai), then a Karate background becomes interesting because the unorthodox stuff it brings in will shine through and because of all the rest; What makes Machida dangerous is that he knows all he basic very well and mix it with unusual things, something most other fighters have never seen. He's incredible but the more he fights, the more peoples get use to his style and as it has been stated before, somebody in the end will figure him out in the meantime and his flaws will get exposed. Thus said, having "flaws" exposed doesn't make him nothing less than an extraordinary fighter that definitely belong to the elite, you can't be less than that after schooling a guy like Rashad Evans, especially with the Coach he has (Greg Jackson = mastermind).