Moriarty is dead. MoGiss said, that they have no intention to bring him back; and in the original story, he also dies. The lack of gore, cited by many as an argument for M's survival, is simply due to BBC policy, that no spattered brain can be shown in this kind of tv show. Kids might be watching.
I always had the hunch, that M might have gone into Sherlock's grave ('I am You; You are Me'), since they needed a body for the funeral, and Molly might have helped.Thus Moriarty/Brook would just disappear, and nobody would know, what happened to him. But it's also possible, that this might go down as the suicide of desperately traumatized actor Rich Brook, and Sherlock will be blamed for it, making his own suicide even more plausible. Considering, that the police will certainly investigate the roof and find at least traces of blood (Molly can't very well clean everything in such a short time on a tar roof) I favour the second possibility at the moment. The tv audience just hasn't been told about the relevant news articles yet. This scenario of course raises the question, if Sherlock's grave is empty, and if not, whose body is buried there.

I've done a lot of reading and pondering over the weekend. A lot of people assume, that M arranged the call in order to use John as a count down clock, but that jarrs with a lot of details: S being completely unconcerned about Mrs.H is the strongest one. But S also wanted John as the witness of his fall. That only works with John being at a special location and a more or less computable time frame  on the street. So he had to get him out of the house for a certain amount of time. So, IMHO S arranged the call.

ThecuriousOne, you are right. In a way the cabbie WAS dangerous, even without a pistol. He was playing mind games with Sherlock by challenging a weak spot brilliantly. It might have almost worked.

Sherlock, that would have been a better shot than Wilhelm Tell,who shot the apple from the head of his son, lol! But I would not put it past John to pull it off, lol!

Well, Sherlock said, that he doesn't need a public image, but that doesn't mean, it's strictly true. If he wants to have customers, it won't do to be considered a fraud. And some PR can't hurt either, as    John's blog demonstrated.

Yes, I got the director's cut. My sons are film buffs, they go for the best stuff. Rutger Hauer is great. I thought, it's a pity, that Sean Young's career never took properly off.
Gattaca has been available on dvd for quite a few years now.

It's not about evidence, it's about suspicion. In the real legal world, there would never have been a warrant for his arrest, because there was not enough evidence for an arrest, in handcuffs no less. But not to be considered a fraud makes or breaks S as a consultant detective; without his good name he wouldn't get any cases, let alone interesting ones, and his brain would rot as he says himself.That said, we simply don't know, if MoGiss will have a more or less elaborate story line about Sherlock's rehabilitation.

The CuriosOne asked, how many times I watched the Reichenbach episode:

  Lestrade: How many times exactly did he fall out of the window?
  Sherlock: It's all a blurr. I've lost count.

Also, to a certain degree MoGiss open up possibilities and threads for a story line; if they really use them in the following season, is not certain. I listened to the audio comments of Scandal in Belgravia. If I understood correcty, they hadn't even thought how to resolve the great cliff hanger at the swimming pool at the time of the shooting. The idea with someone (Irene Adler) distracting M with an urgent phone call came after they had finished with the first season. They even reshot parts of the swimming pool scene to make a complete fit. So I think, they have thought out carefully the why and how of the apparent suicide, but what comes after that, is not decided yet. MoGiss even said so in an interview. A lot of things can happen, before they start filming again. Ben Cumberbatch for example remarked, how much his face has changed in the 18 month, which elapsed between the shooting of the first season and the making of Scandal. And he is right. His face has changed a lot from the slim boyish look in the first three episodes to a heftier more mature expression, we see in Reichenbach fall. Should he change even more, they might make the time gap between his fake death and his return larger.

Yeah, Sherlock, I wondered ,too, about the bugged appartment.
I like the idea, that Sherlock learned one or two things from Irene, being dead, when you're not, might be another one.  I like the parallels: Irene was thought to be dead, when Sherlock guarded her phone; if my guess turns out to be right, Sherlock is thought to be dead, while Molly guards his phone.
I also thought it a little stupid, that M never searched S for a recording device or body bugs; even in real death S could have proven his innocence, should he have been lucky enough to take the phone down with him in one piece. It would not have triggered the snipers to shoot, because they went away, as soon as they believed S to be dead. Oh well, it ain't easy to be a villain from the realm of fantasy.
So how would Molly or some other helper know to look for the phone? S could have called her after M was dead, or, since he had planned the jump in advance, he would have told his helper to collect the phone.
A lot of you guys asked, what Sherlock actually had planned for M. After all he could not really be sure that M would kill himself. And he could not very well do his fake jump with an onlooking Moriarty. I think, I've found a compelling theory, as well as some evidence in the movie itself, which you can only see, if you play the dvd in super slow motion. I will write about it tomorrow, because it takes a little time to put it together.
I know one thing for sure: If we finally know the solution, I will never ever watch the Reichenbach episode again, lol! Enough is enough!

You also have to consider that the dog might have been affected by the psychedelic fog as well. Maybe it was seeing gigantic Cheshire cats with a glow-in-the-dark grin. That would unnerve even the most good natured dog.
I would have taken the dog, too!