Glen Powell called into his own lookalike contest in Austin, Texas on Sunday to offer the winner a very special prize: a cameo in his next film.

For the roughly 8 billion of us on planet Earth, there's a 0.11 percent chance that each person has a doppelgänger somewhere in the world. Over the last few weeks-with a firm belief in this sliver of a statistic-film fans put out an all-points bulletin for lookalikes of their favorite actors.