The Helvetica font is one of the most of the most widely used sans-serif typefaces ever, over the years everything from perfume bottles, to billboards to electronic devices have made use of it, even this website is using a variant of this typeface: "Helvetica Neue".
Helvetica or Neue Haas Grotesk was developed in 1957 by Swiss typeface designer Max Miedinger with input from Eduard Hoffmann. It immediately gained popularity for its clean, minimalistic look which has continued to be easy on the eyes throughout decades of changing fashion trends. The fact that there is even a documentary about it stands testament to the popularity of Helvetica and it is likely that it will continue to be utilised for a very long time into the future.
This 2007 documentary by Gary Hustwit explores how Helvetica affects our lives and culture around the world as a whole. It also marks the 50-year anniversary of the typeface.