I learned that I can play the Harmonica very well with no training at all.
I learned that I could do the same thing not too long ago. I taught myself to play in about 5 minutes.
Speaking of music, anyone ever heard of Ronnie Milsap?

I learned some interesting stuff about him yesterday after looking him up due to his name popping up in an episode of Monk. You're probably wondering why he's wearing those shades, for example, and why if you search for him you won't be able to find a single image of him without them on.
Well, he was born blind. However, unlike most blind musicians, Ronnie's case is interesting because he has no eyes. Just plastic ones underneath the shades. That's about the most interesting thing I've learned in a very long time and I probably won't get over it for a while.
On a more solemn note, I also learned yesterday that the McRib will not be available until the late half of December. Read this post for slightly more information.