The ability to see in ultra-violet! I've always wanted to write a story about a man drunk in bar at midday, talking about how when he was a child a freak accident involving cosmic radiation, a lightning bolt and a clown car gave him the ability to see in ultra-violet. He got a superiority complex about it and tried to lord it over people, but when he took advantage of it he realised there was nothing he could do. Well he could read those secret messages 6 year old girls write, without the special pen, but that wasn't particularly helpful as far as crime-fighting went. His pride got him into trouble and he started picking fights and turning to drinking before crashing out.
Then the girl he's telling the story too, asks him to come outside and take a walk through the meadows with her. She sits him down next to some flowers and traces the delicate ultra-violet patterns in the petals.
'I can see in ultra-violet too'
-END-
Or else, the power to stop time, but it affects you the same. No-one will ever know.