1. Execute prints backwards
  2. Make your language unusable

  3. JAxH obfuscated method, not text
  4. Not a quine, but a typing accuracy test that asks you to type it's quine

  5. MS Paint is underrated

  6. Code that will only execute once
  7. Make an error quine!

  8. Hello world! with NO repetition
  9. Write a program that always outputs "2012" - even if it's modified!

  10. Images with all colors

  11. Make a circle illusion animation

  12. Design a One Instruction Set Computer!
  13. Programming Languages Through The Years

  14. Debunking Stroustrup's debunking of the myth “C++ is for large, complicated, programs only”

  15. Confound my attempts to solve the halting problem

  16. Sort a list and write some English!

  17. Create a programming language that only appears to be unusable

  18. Create an analogue clock

  19. Divide Two Numbers Using Long Division

  20. Redraw an image with just one closed curve

  21. Do the needful?

  22. Recreate an xkcd graph procedurally with your favorite plotting tool
  23. Generate a 1920 x 1080 graphic with 2,073,600 unique colours
  24. Paint by Numbers

  25. Limerick Hello World
  26. Classic Proof Fallacy
  27. Emulate an Intel 8086 CPU

  28. Implement map()...with bugs

  29. Confuse the Dakotas

  30. Halt with 50% non-Halting
  31. Computer Generated Cracked Soil

  32. Emulate a MOS 6502 CPU

  33. Valentine's day greetings card generator

  34. Rotate An Integer Array with an O(n) algorithm

  35. Code to display a string without calling any methods or functions
  36. American Gothic in the palette of Mona Lisa: Rearrange the pixels

  37. Patch the Image
  38. Render a version of the BBC Micro owl logo
  39. Output ISO8601 date

  40. Hide a Brainf*** greeting in other code

  41. Breakout in half an hour

  42. Hello world! with limited character repetition

  43. Manipulate destiny, fake random numbers: Be Dirty Harry

  44. ASCII ART edge detection

  45. Create a flaky test
  46. Dither a Grayscale Image

  47. Maze Generation
  48. Reinvent the For loop

  49. Patch the Paragraph

  50. Artistic source code: Hello World

  51. Lorem Ipsum Generator

  52. "Write" a simple calculator without writing a single line of code
  53. Write a Programming language of Unknown Completeness

  54. Today (September 24) is HONDA birthday

  55. Print a Variable's Name

  56. Write a function that takes (x, y) and return x to the power of y WITHOUT Loops
  57. Create a User-Profile Mini-Game
  58. Reversed language name

  59. Let us create a sonnet quine!

  60. Make a scalable Christmas Tree

  61. Making Future Posts Runnable Online with Stack Snippets

  62. Divide and stay Happy. Who cares about the Conquer part?

  63. April Fools Day!
  64. Warhol these pictures

  65. Function/macro that returns true if one of its arguments contains a call to itself

  66. Alphanumeric Hello World

  67. Olympic Games Logo - Free Style Edition

  68. The answer to life, the universe, and everything

  69. Crash your favorite compiler

  70. Code Romanization

  71. HRNG - Human Random Number Generator

  72. Improvise a Hardware Random-Number Generator

  73. 8 ought to become Infinity

  74. Let's draw the flag of Nepal

  75. Build interpreter for non-existent language

  76. A boring version of yourself

  77. Factorial in haiku!
  78. The Smart Person's Mirage
  79. Unpixellate an image

  80. print "Hello, world!" without using literals

  81. Quine...but shifted by one

  82. Convert English to a number
  83. Transform number into 7-segment display pattern

  84. RPN calculator without pointers

  85. Help Me Count to Ten!

  86. Compiled quine variant

  87. 400th Question Celebration/Challenge

  88. Generating Binary shapes

  89. Write program in your favorite language in another language

  90. Print a smiley face

  91. ULTIMATE CODEGOLF!!! (Codegolf a turing-complete system)

  92. Rearrange pixels in image so it can't be recognized and then get it back

  93. Generate groups for in-class work
  94. Correlation Coefficient of Words

  95. "Hello world!", repeating each character n times

  96. Animations with all colours

  97. Draw random black-and-white forest
  98. Code Golf of Death
  99. Call a method without calling it

  100. Paint a still life (or a moving one) - draw an image in the Game of Life