Agree about the Sci-Fi moves being bottom rung, B movies at best. Seems like if they made fewer of them and invested the money in just a couple of movies with better story ideas, scripts, effects, etc., they be much farther ahead. As it is now, they crank out several extremely bad movies, show them a few times, and then they disappear forever.
As for Bubba Hotep, I don't know what you were expecting. It was meant to be an offbeat, dark comedy-horror flick. Sure, is wasn't as good as I had hoped, but it was still amusing for what it was worth. And Bruce did a great job, as did Ossie (Hey, I'm operating on sand here) Davis.
I'll probably Tivo this "Alien Apocalypse" just to check it out. But, I'd rather somebody brought back Brisco County Jr.