mikethomas: Top 20 Useless Superpowers
there is also colaborative page on these at superuseless.blogspot.com
My faves are “Healing Punch”: as you strike your foe they are instantly healed from it’s effects. And “Psychic Amnesia”: the ability to forsee the future but instantly forget what you saw.
Honorable mentions: “Achieving 99% Opacity”, and “Helium Resistance”.