Lego Island

Dancing trees and flowers:
During game play press [Z] + [T]. 

Listen to radio during credits:
During game play press [Esc]. Turn on the radio and click on the red brick when prompted to exit. 

Flight Mode:
Enter the elevator in the Information Center. Allow one minute to elapse while in the elevator. Then, use the cursor keys to fly around the town. 

Play as the Brickster:
Start the hospital mission, but do not save anybody. Wait a few minutes until you are arrested then you will become The Brickster.