Well, Bad Santa won't make any top lists for episodes, but it did have it's moments and I really did like it.
I loved:
Beckett's poem
Beckett's little happy dance at the Christmas party. But poor Rick, he looked so sad.
Ryan's proposal story
Espo & Lanie's decision - best reason for a break up ever
the scene in the strip club (the sneak peek)
Espo & Castle discussing Santa at the crime scene
the case was very interesting too
the cyber lady with the mob who helped Castle
the opening scene at the loft with Beckett saying "what rhymes with I'm screwed?"
While it wasn't happy news, Gates telling Rick he couldn't work with them anymore was a measure of how far their relationship has come - she seemed sad to have to tell Rick the news.
Like I said, not a top favorite, but not a bad episode either. I had guessed both big things in the episode - that's amazing for me.
I think Rick Castle, PI is going to be a hoot. From what I am reading, the new episodes pick up a few months later, and the guys & Kate are doing OK without him (considering they did just fine before he came) & then he tells them he got his PI license! he thinks that's how he's going to get back in....should be interesting.
Some in the fandom are unhappy Rick didn't tell Kate right away - but I think it obvious why he didn't - it's probably the first time in many years she's OK with Christmas, and he didn't want to ruin that for her.
So next Monday we get a repeat of "Driven", and the following week, a repeat of "Montreal", then nothing until Jan. 12th.