Imperial College London scientists have recently unveiled the most accurate measurements taken of a single electron. Their analysis showed the electron is within 0.000000000000000000000000001 cm of being perfectly round. The measurements required precise ytterbium fluoride laser work to analyze the electron for wobble and movement.

Personally, my first thought was, "annnnnd this is important why?" but the article indicates understanding the exact shape of an electron is useful in the study of anti-matter when dealing with positrons.