 In the episode "Tee Off, Mr. Bean", Howard Goodall's choral theme tune for another Richard Curtis comedy, The Vicar of Dibley, is heard playing on a car stereo. In Merry Christmas, Mr. Bean, while playing with Queen's Royal Guards figurines and the nativity set, he hums "The British Grenadiers", which was quoted in the theme to Blackadder Goes Forth.
