'''WARNING! THERE MAY BE UNMARKED SPOILERS!'''

* {{Anvilicious}}: It has a thumpingly unsubtle MotherhoodIsSuperior message, especially when the tree people reject males (even the Doctor) as their vessel because "You are weak", but accept females - Madge in particular - as "the mothership". British journalist Caitlin Moran figured that having spent the day corralling the family and making Christmas dinner for everyone, mothers would appreciate the boost "Yeah, we're the ''[[Franchise/StarTrek USS Enterprise]]''".
* CrowningMomentOfHeartwarming: "We always set a place for you. It's Christmas, you moron."
* {{Unfortunate Implications}}: Reg's behaviour as described by Madge (he followed her home every day until she agreed to marry him) is essentially stalking, but is presented as romantic
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