List of Google Pranks

2000

• Google MentalPlex
• Google MentalPlex FAQ
• Google MentalPlex Usage Illustrations

2002

Pigeon Rank 

2004

Google Copernicus Center 

2005

• Google Gulp
• Google Gulp FAQ 

2006

 

• Google Romance™
• Google Romance™ FAQ
• Google Romance™ Tour

2007

 

• Gmail Paper Index
• Gmail Paper Announcement
• Gmail Paper Program Policie  
  

• Google TiSP
• Google TiSP FAQ
• Installation page
• Press Release page
• Not found page - April fools version

2008

http://adsense.blogspot.com/2008/04/introducing-adsense-for-conversations.html

 led to Tay Zonday's cover of Rick Astley's "Never Gonna Give You Up."

• Blogger Buzz: The Official Buzz from Blogger at Google: Announcing Google Weblogs (beta)
• http://www.google.com.au/intl/en/gday/press.html 
• Google Manpower Search 
• Google Summer of Code 
• Google Talk Goes Green 
• Google Wake Up Kit
• Virgle
• Orkut 
• Rickrolled. (youtube)
• Searching for "the answer to life, the universe, and everything" 
• Google offers services in many languages,
• Searching for "once in a blue moon" 
• Searching for "number of horns on a unicorn" 
•   Swedish Chef's Bork bork bork, Pig Latin, Hacker (Actually leetspeak), Elmer Fudd, and Klingon.