It's not that I'm a big biology nerd or anything, but I just think this is an important thing to know. I mean, everyone has these things in their bodies. Granted, some may have their appendix removed, but most don't. What I also liked was how cool the music was. It was great to have that little tinging sound whenever you matched up the organ. Everyone should be familiar with this.
The hardest part was easily the smaller organs. The thyroid gland is probably one of the lesser known organs. I failed the first time, but got in on my second try. Hey, when there's only one medal, you have to work hard! I have yet to play the first one, or I don't remember it.