I can't say anough about this show. It's terrific, which means my cynical side says it will get canned, haha.
I love the flirting between Castle and Stana Kanic's cop character. I hope the show goes deeper into her character to show that she can be emotionally vulnerable too. I think we'd all like to see a softer side, lol.
I have to admit, I thought tonight's episode was your typical crime plot, but it had a good twist.
I also think the number of side characters (the 2 other male detectives, the captain and the medical examiner/criminologist) are a good mix.
But the best is how the show incorporates Castle's daughter and mother in a small way to help him solve each crime.