Online Rock Paper Scissors
Just when you'd beaten your addiction to playing Solitaire on your computer here we go again!
Now that IBM's Watson has conquered the humans in Jeopardy, the computer programmers have set their sights on the standard for office decision making: Rock Paper Scissors!
You can test your skills against the computer here, courtesy of the New York Times. You can even watch what the computer is "thinking" while you play.