Hi, I'm from spain. Here in Spain forums, arises a theory that I have not read around here, is this: That Red John is Michael Kirkland, Bob's twin brother, there are scenes where Michael could have cast go through Bob. Scenes that would explain better if it was Michael Kirkland, such as this:

http://www.youtube.com/watch?v=RkY0VY96G80
http://www.youtube.com/watch?v=pyhCIR4e4MQ

The photo of michael is in the list of the 7 suspects, because it is the twin brother Bob, Heller doesn't lie.