When the Runaway Five talk to you or are in their backstage room, there are (appropriately) five members of the band. When they perform, there are SIX men on stage.
If you play the game for a long time, the character's dad calls to suggest you take a break, even *before* you get the Receiver Phone.
The guide packaged with the game makes several errors. For instance, Slimy Little Pile is listed as Slimy Little Pig, Thirsty Coil Snake is listed as Desert Coil Snake, the way to get the Gutsy Bat is wrong, and it mentions using the Pencil Eraser where you need the Eraser Eraser.