DONT LISTEN TO NEGATIVE REVIEWS. I could care less how many cigarettes they smoke, or how many ads there are. It took two episodes to get moving, but season 3 was absolutely perfect. People are nit picking all these minor things. It's a SCIENCE FICTION show , it requires suspension of reality! Watching these kids grow up was a pleasure, they couldn't stay young forever, it had the right Amount of closure, while still keeping the door cracked 3 inches . Bravo!