Crazy bump!
A project I've had in mind since Beta 1.3 finally coming to fruition! A water slide that is built like a roller coaster in roller coaster tycoon, one segment at a time.
http://youtu.be/K6fwVROeesA
I had been planning to build a segmented water slide using MCEdit but never got around to actually using it. Fast forward, 1.8 The Bountiful Update comes out with the /clone command. Granted copy & pasting is probably much easier in MCEdit, I still haven't gotten around to using it. With the new updated out, like with every major update, I have to pop on Minecraft just to check out the new stuff; so motivation to build something was easy to come by.
Here is the tutorial:
http://youtu.be/vRWm4c1E1II
Obviously the demonstration builds are not very interesting, but the concept, if fully applied, is interesting.