Okay, so you probably come across the odd SMW-level-that-completes-itself occasionally. This is one of those levels, but better. The sound effects in this level make the tune to a few Japanese songs. Many checkpoints, on/off blocks, Koopa shells, and a specific custom block are used. There are also 16-bit versions of those songs as the music for that level. They also put "THANK YOU!!" the wrong way around on the map, so you go from "YOU!!" to the level, to "THANK". Well, here is the video.

Yeah, I saw that and it is awesome. You must have some patience to put something like that together.

This one is epic also. Not only did 4 tracks have to be made, but they even have been timed to have images that go by the multiple screens.

I love these kind of videos.