Moving Heads
At the title screen, move the joystick around, and it will move the 64 around the screen. The Star Fox team's heads will move to look at the 64.

Turn Off the Cross-hair
To turn off the aiming device, just press Start and R.

Extra Stuff
In order to get the Extra Mode, Tanks in Versus Mode, and the Graphic Equalizer in the Sound Test, you must achieve medals on all 15 levels, by beating the stage with a specific number of hits, and keep all of your comrades alive. Here are the scores needed to achieve a medal on each level:

Easy Paths
Corneria: 150
Asteroid Belt: 200
Ficcina: 50
Sector X: 150
Titania: 150
Volus: 150
Venom (Easy): 200

Medium Paths
Katalina: 150
Solar: 100
Macbeth: 150

Hard Paths
Sector Y: 150
Aquas: 150
Zoneth: 250
Sector Z: 100
Area 6: 300

Training Hologram
Score 100 hits in training mode and a Star Wolf class ship will join in on your training.