Many of us might know about the following Google search result which is not as expected but teaches you what it is in an humorous way :)

http://www.google.com/search?q=anagram [Notice the Did you mean feature … ]

Did you mean: nag a ram

One can use Wolfram|Alpha to create anagrams

http://www.wolframalpha.com/input/?i=anagrams+pepsi+cola

Similarly other Easter eggs are

http://www.google.com/search?q=ascii+art [Notice the Google logo in search result …]

  ___                _
/ __|___ ___ __ _| |___
| (_ / _ \/ _ \/ _` | -_)
\___\___/\___/\__, |_\___|
  |___/


http://www.google.com/search?q=recursion [Notice the Did you mean …]