I recently picked up Beyond the Movie, Alexander the Great by National Geographic. It is an hour long documentary, and it is pretty bad.
It glosses over a lot and covers the material of Alexander's life very quickly. It also has these horrible little vignettes that they hired some character-actor heavy-type to play Alexander. It is revolting, especially when they intercut with some of the beautiful marble statues of Alexander. If they had any sense they would have covered the story of the movie - in terms of telling what was true and what was made up, but they often don't and then they skip over whole other parts of his history so there isn't a lot of light shed on who he was.
They do have several historians and one general who talk about different parts of his life. But unfortunately the story the documentary makers chose to tell is Alexander the killer and Alexander the meglomaniac. Pretty standard hatchet job.