Riverworld was appalling. Battlestar Gallactica has only just started over here. I wasn't impressed at first, they've changed a few things I think they should have left alone, but now it's growing on me.
The casting of Starbuck will always be wrong, it doesn't matter so much that she's a woman but that she's bloody awful in every respect. No charm, wit, charisma or chemistry. She just shouldn't be there at all. she doesn't even qualify as eye candy, so it's beyond me how she got the part.
I do like the new cyclons though. Not the CGI robot ones, I think they're pants. But the 12 new models. Without saying anything to spoil it for people who haven't seen it. And they've kept the KITT eyes, and the space battles are fun. And I like Balthar, he does a good bonkers face. Adama looks like a drug dealer though.
I didn't like the Earthsea books. Found them very boring. So for me at least, there's very little they could do wrong to them and anything they do change is likely to be an improvement.