Fizz Buzz in Tensorflow (2016)
I know people consider it condescending if they are actually a competent programmer.  However as a person that has done hiring I can't tell you how many people have a CS degree that they supposedly attended school and passed(as in their credentials check out) but can't even do the FizzBuzz test.Once time for fun I used one of those online code collaboration tools.  I had a couple of "programmers" that were still actively working on the Fizzbuzz question 4 hours later.  I went to lunch and forgot about it after I came back until the end of the day and realized there were still people working....