Why the preselling just after the title-sequence? I hated it.
Liked the fact that many people smoked. Particularly the doctor.
The oldfashioned (cord) phones and pencils, throughout the series I kept wondering whether I liked them or not. They did convey a certain atmosphere, but it seemed at times in weird contrast with the fact that they were on space-sailing ships. It never really bothered me though.
Interesting developments of character.
Starbuck, an "angel"? She suddenly disappears in the last episode. Could we have seen that coming? I doubt it. Kind of a "meh" ending for her.
They did let a lot unspoken, unexplained.
I loved the mood and music (tingling piano) of the Cylon ships. It made sense, completely different, and strangely 60's/70's scifi, in a good way.
U2, the music four the of Five Cylons, hear ("All Along the Watchtower"). It was haunting and good, yet there were fringes of a paradox. Should they have chosen a more unfamiliar song? But perhaps the fact that it was so famous and wellknown buoyed it towards the strange feelings.
They did not dwell too long on the "who are the remaining Cylons". It could have easily been a stupid way to prolong the storyline.
I didn't like the acting of the "Mr President" - Mary McDonnell, all the time. She wore a squinted-eyes-angelic-smile very often, too often, and hardly seemed to change her moods.
They didn't explore the hybrids very much, the future of Cylons and mankind, the Cylon blood that saves humans...