Some say that he once counted Colossus as 4 credits and that he once added Splash Mountain to his coaster-count, all we know is he's called the Jeff Johnson.
Very well played.
Here's mine, I'll give hints if needed. Also, there's a really good website for convering Youtube videos to mp3 files called youtube-mp3.org, It works very well, it's fast and gets really good sound clarity.
Coaster Sound 01.mp3