HIGH School Musical star Zac Efron has been named one of the worlds most influential people by Time magazine. The teen idol has been named alongside US President Barack Obama, George Clooney, Bono and Oprah Winfrey on the list, reported imdb.com. Efron made his first entry in Time magazines annual list of the planets top 100 influential figures. TOI Other stars on the list include rapper M.I.A., actors Brad Pitt and Tom Hanks, sports star Tiger Woods as well as actresses Kate Winslet and Tina Fey.