The Fall of Caesar's Character

So after our discussion about the HBO series in class on Monday- and of course after reading the first two acts of the play- I started thinking about the potential differences between the show and the play. So to that end, my discussion question would have to be 'How similar or different are the show and the play?' for example, are the reasons for the assassination of Caesar as selfish and morally gray as they were in the tv show, or is he more of a clear villain? Or do they not adequately explain why he had to die? I think discussing this would help us gain more of an understanding of whether Caesar was truly an evil man, or if he suffered from the same defamation of character that Richard III did.