Let's cover all our bases. :)

The hospital scene with Kirkland and Jason Lennon is one of the most PUZZLING scenes in the whole series.
There are two possibilities:
1)It is Bob Kirkland at the scene.So, what do we got?Kirkland asks if Lennon recognizes him.That makes total sense by the time he has a twin brother that he thinks Red John killed.Depending on Lennon's answer he would be able to get the information whether his brother is killed or not by Red John.
Kirkland: "Do you recognize me?Have you seen me before?Look close"
Lennon answers: "No"
Kirkland: "Are you sure?It's important."
Lennon: "Yes"
After that he takes out the injection and kills Lennon.WHY?We already know that Kirkland chases Red John as well, so killing a key-person to the case makes no sense.Some could say He wanted to make sure that Jane would not have the information Lennon could provide.But still, watch the S06EP04, Bob Kirkland tortures people and is being so aggressive, so determined, so sure for himself.He MUST do it till the end.At least he could ask him a couple of questions about Red John before killing him.THAT MAKES NO SENSE.

2)It is Michael Kirkland at the scene.What we got there?Killing Lennon makes TOTAL sense, for keeping away from Jane all the things that Lennon knew.So why is it so DAMN important about Lennon recognizing him or not?What's the point?I mean, if he was Red John, Lennon's answer is weird.Some might say he has lost his memory.That's impossible.Here's why:
Kirkland: 'You are in Sacramento Hospital, you've been shot.Do you remember that?"
Lennon: "Lorelei Martins"
Kirkland: "Correct.Your mind is CLEAR"
Some other might say that Lennon indeed recognized Kirkland as being Red John, and he answered "No" because he was afraid that if he would be able to recognize RJ, he must die.But that theory is rejected too.Why?Look at the expression on the face of Lennon.He clearly seems troubled trying to identify the guy that stands in front of him.
Last possibility:Lennon knows that Red John has a twin brother, and he answers no because he is not sure if the person that he is talking to is either Red John or his twin brother.In my opinion, there are a lot of scenes that puzzle the audience, and Bruno Heller is obligated to give the answers.

OK, this is not a theory, just a market research.
Who would be willing to pay 10bucks to have Ep8 now, ready to download?

GREEN = I would pay
RED = I wouldn't pay

LMAO http://24.media.tumblr.com/96deb1a51cbb053dcc80470cd7d19ac2/tumblr_mwg0tcivST1qf7x1xo1_400.png

Before the season started I thought RJ was Partridge.  First episode when Partridge was killed I just thought he faked it and it was still him.  Now that we've allegedly seen his body I'm probably wrong? But who knows. Who ever it is I think its one of the "dead" suspects, not Bertram or Smith.

In any event whats more unbelievable is how Red John holds down a full time job, is a serial killer, has followers, founded the Blake Association (and make sure it runs the way he wants), and was or is involved with Visualize.  

How does he find the time in the day to do all this and make very few mistakes that would lead to his capture.  That's the real mystery to me :) 

Wait. I got it!
It all makes sense now.
CBS has done everything in their power to make us think that they goofed and let the cat out of the bag that Sheriff is RJ. Well, they'd have only goofed if he was. He isn't!

But he is still alive. No way he got burned to a crisp when he was standing with Smith, Bertram, and Jane and they all fine.

He escaped. He may even be helping Jane but that's beside the point.

I think the scenes we've seen with him in the upcoming episode. Running into glass window, running through cemetery, etc., isn't him running from Jane, but from either Bertram or Red John.

If Bertram is NOT Red John, then he is high ranking member of Blake. If he is, well, there you go.

I think Bertram could be RJ, but I think a better twist would be Michael Kirkland bc of the voice and the out-of-left-fieldness of it all.

So I think that while Sheriff definitely shows up in the next episode, his running and bullet holes are the work or Bertram or RJ, probably Bertram.

Either way, I think that either Bertram or Michael Kirkland is most definitely RJ.

We won't know for sure until Sunday!

I wrote this in a comment earlier today, but it deserves it's own post:

Many theorists are failing to take into account something of
staggering importance. No actor has known that they are (or will be) Red
John until the very final episode of RJ with the reveal, which was
recently filmed. THEREFORE, every single voice recording we have of RJ,
and every single sneak-peak of RJ (be it in a mask, or holding a cup of
tea, or in the shadows) has been using an EXTRA actor (or a voice actor)
with no intention of them being RJ ultimately -- just to film a
specific scene for purposes of the show. THEREFORE --- we can not, ever,
take into account what a voice sound likes, what a hand looks like,
what a body shape seems to be, what a shadow looks like etc... from
previous episodes. It is completely false information. The show (Heller)
has been abundantly clear about this in interviews etc. So, please
disregard all evidence of voice samples and the like. They mean nothing.