Helvetica, the Swiss-knife of Fonts, was designed in 1957 by designer Max Miedinger. Helvetica can be seen on almost every sign, slogan, or billboard and it is also used vastly in the art of logo designs of many famous companies. The reason it is so widespread and popular is because it is the safest and most neutral font choice.
Much of Helvetica's appeal come from its timelessness and neutrality - letters so ubiquitous they become part of the communication. It may be the most played out typeface ever but it's aura will remain forever.