1. 

   Hello World

   Alex Townsend, March 2013

2. 

   Happy Valentines Day! (again)

   Anonymous, February 2013

3. 

   Encryption of a message with scribble

   Nick Trefethen, April 2012

4. 

   Happy Valentines Day!

   Anonymous, February 2012

5. 

   The birthday paradox

   Mohsin Javed, Alex Townsend, and Nick Hale, LNT's birthday, 2012

6. 

   Writing a message in 3D

   Nick Trefethen, November 2010

7. 

   Birthday cards and analytic functions

   Nick Trefethen, September 2010