An absolutely mixed bag. Starbuck being a mystical angel with no explanation was unforgivable. Baltar becoming a farmer and overcoming his class snobbery seemed pretty appropriate. Tigh was ruined, but Adama and Roslin's arc went in the logical direction.
Really though, it's hard for me to separate the character arcs from what pissed me off about the main plot's ending. The idea that everybody would reject science and technology like that is just insane to me. And a really, really bad message for a sci-fi show.
"Embrace God! Throw all your technology in to the sun!"