If you arrange the first letters of the names of the main characters in Inception, you would get DREAMS.
-4
There's a road in Lancaster, CA that has grooves carved in such a way that when you drive over them at 55 MPH, they will play a part of Rossini's "The William Tell Overture."
16
If you place a ripe banana next to a green tomato, the tomato will ripen due to the ethylene gas produced by the banana.
16
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9