NiGHTS: Journey of Dreams Cheats - Wii

Different Endings
Beat the game as noted to unlock different endings (they will be available on the "Story Select" menu):

Audio Room - Finish Will's story.
Sketchbook - Finish Helen's story.
Helen's Video Room - Finish Helen's story with a least a C rating on all missions.
Will's Video Room - Finish Will's story with a least a C rating on all missions.

Unlock original "NiGHTS into Dreams" characters
Claris Sinclair - Obtain all 60 dream drops and jump into the fountain in the dream world with Helen.
Elliot Edwards - Obtain all 60 dream drops and jump into the fountain in the dream world with Will.

Dreamdrop Location Help
If you recieve a TV in My Dream mode, view it to see a close-up view of locations where dreamdrops are hidden in Chase Missions.

Easter Eggs: Halloween and Christmas
On Halloween (October 31st) most of the Nightopians in the My Dream garder will be wearing black witch hats.
On Christmas Eve (December 24) go to My Dream and you will hear the Jingle Bells song from Christmas NIGHTS playing in the background.

Unlock Music
Original NiGHTS Soundtrack - Get an "A" rank on every mission to unlock the soundtrack to the orginal NiGHTS game. Dream Gate will also be snowing and have different background music.
Race Music - To unlock Race Music in your Sound Library, simply play a single two player race in two player mode. After doing this for the first time, you should find the race soundtrack in your Sound Library.