The first episode of the series to go below a 8 rating on IMDB.
The scene where Charlie's father chops off the doll's head (as a butcher in his flashback) was an homage to the Beatle's album "Yesterday and Today" (where band members were featured among slabs of meat and decapitated dolls).
It's not traditional in England for newborn babies to be kept separate from their mothers. This is an adaptation for the American audience.
The painting hanging on the wall in Charlie's dream is The Baptism of Christ by Andrea del Verrocchio. Charlie's vision on the beach is based on this painting, with Claire and his mother assuming the positions of the angels.