Why no Half Human, Half Ape Today?

   I do not say evolution did not take place, but the theory does seem to have some holes in it.

   Like, how it is that the evolution of man from monkey seems to be a one-time thing. If evolution is a true principle, why isn't it still going on?
   Seems we should have some more Neanderthal Mans having just reached that stage, or something like them having developed, and they should be running around in our backwoods, today. At least, some sort of half human, half ape should be in out in our jungles.
   Or, perhaps at the other end, why don't we see a human here and there who has progressed to the next stage, into something we see in the movies?
   If evolution was a one-time thing, that's one thing. But, from what I understand about the theory of evolution, it is still going on. So, it seems the monkeys and apes should still be spinning off new varieties, if not humans, then creatures a lot like the human, and just as intelligent.
Why not?