If you had to choose, what would be most fun and/or useful power from a movie, TV show, cartoon, book, games, or mythos? Include any drawbacks of the power that the source adds into consideration

Separating the silly and serious analyses would also be nice. (see various videos, articles, etc. on how certain superpowers would actually kill you, e.g. stopping time would mean you couldn't breathe as the air cannot move)