Conker's Bad Fur Day Easter Egg - Banjo and Kazooie Cameo

At the start of the game, you can see both Banjo and Kazooie in the 'C*ck & Plucker'. Banjo's head is mounted above the fireplace and Kazooie's head has been made into the handle of an umbrella found in the closet.

You can also see this at the main menu. Just scroll around so you are facing a fire place and you should be able to see Banjo's head.