Santa's apartment is great, from the sparkly lights to the train set. All the Santa related jokes in the lab as they processed the evidence and when they found out who the victim was, very funny. Hilarious when they confront the Santas to check the bells and the Santas sing at the killer!
Parker is a very smart kid, finding the FBI. Creative way of giving the family a Christmas together, putting Russ in civilian clothes was a nice touch. Very sweet of Booth to get the Brennan family a tree. Brennan's trip to Peru certainly sounds fascinating, I love the South American pyramids.
Blackmail is a beautiful thing – that was a pretty decent kiss.
Fun, sweet episode.