Super Stairs

The Geometry Teacher posted an interesting lesson for his Algebra II class.  He showed the students the super stairs video.  Apparently the idea was from Dan Meyer.  The two main questions are how many steps will he run on the super stairs and how long will it take him?  I really enjoy using a video to teach a lesson because it gets students involved more then a word problem from the book would.  This idea could also make students get up out of their seats.  You could even make it a project using stairs in your own school.  Have the students guess and try to figure out a way to solve the problem and then students could verify their guesses by completing the challenge if they like.