How to say goodnight in Spanish

The Spanish word for goodnight is buenas noches.
How to pronounce buenas noches in Spanish:
Click to hear the pronunciation of buenas noches  
Examples of buenas noches in Spanish:
Buenas noches, Señora Pena, siéntese, por favor.
Good evening Mrs. Pena sit down please.

Buenas noches, doctor.
Good night, doctor.

Que tengas buenas noches.
Have a good night.

Do you know another example that uses goodnight in Spanish? Please tell us where you read or heard it (including the quote, if possible).