In the end credits, instead of it saying voice cast, the cast is listed below the credit saying Voices in the dark.
After the credits finish a line reads "Perfect Dark is Forever". After that the words Perfect Dark move across the screen to music and will not end unless the player presses a button.
In the Nintendo 64 version at the start of the game, the Nintendo 64 logo transforms into the Datadyne symbol
After end credits, there is a scene with Elvis's hoverbike escaping Area 51