Google April 1st Press Releases

Google & Virgin join forces: http://www.google.com/virgle/



Spreads to Gmail and it's new "Custom Time" feature: http://mail.google.com/mail/help/customtime/index.html

International branches get into the mix too:
http://www.google.com.au/intl/en/gday/index.html

Easter Egg Google Docs Airplane