When House and Wilson attend a funeral, that funeral home is where they filmed the movie The Princess Diaries (2001). House and Wilson walk in at the same place where Mia (Anne Hathaway) waits to meet her grandmother Clarisse. House gives a speech about his father at the same location where Mia celebrates her new title as Princess at the end of the film.
On their trip to the funeral, Wilson exclaims, "Good heavens, we haven't missed it. It's like the end of A Christmas Carol," referring to the novella by Charles Dickens, and the end of the story when Scrooge realizes he hasn't missed Christmas Day despite his night of traveling with the ghosts.