I can clap extremelly high in volume, tho the only use for it is turning my hands red, warm and painful.
I can also memorize useless stuff without trying, but fail miserably at memorizing something I actually want to.
For example back when I was young when pokemon yellow came out, I memorized the name of all the initial 150? pokemons in a few hours, and still remember most of their names (or all probably) if I look at them right now, even tho I haven't played any game or watch anything related to it in over 6-7 years.
However, it took me over 10 days to learn all the hiragana characters.