There are a handful of fonts that are overused because they come pre-installed on most people’s machines (i.e. Papyrus, Zapfino, Comic Sans). Before you reach for that quirky pre-installed font, consider looking for something new! There are several sites out there with great free and pay-what-you-want fonts.
If you are willing to spend a bit of money ($25+), you can find classic commercial fonts (i.e. Helvetica, Avenir, Univers, Futura) on Fonts.com.
Need help installing new Fonts? DaFont has instructions for both Mac/PC.