It's not that I find it funny like laugh-in-your-face funny, but interesting: Many people seem to have difficulty with "evolution" and "JEWEL." Yet for me, those are probably two of the easiest songs for me to sing! (So is "Fly high" actually.)
Lately I've been having trouble with "Duty," but I'm trying to improve! (I will personally apologize to anyone that says they actually love hitting that "F" doing that octave jump at the end of the chorus.

)
Hmm... Looking at my list from 2005, I find it interesting to see how I've changed. I stated then that I was bad at "ANGEL'S SONG," and I find it very easy now.