Arial overall
There's more to a font than meets the eye. Take the ubiquitous Arial. Ever thought about why it can be found almost all over the Web today? Read Mark Simonson's brilliant "The Scourge of Arial":
"Arial is everywhere. If you don't know what it is, you don't use a modern personal computer. Arial is a font that is familiar to anyone who uses Microsoft products, whether on a PC or a Mac. It has spread like a virus through the typographic landscape and illustrates the pervasiveness of Microsoft's influence in the world."