Font Explorer makes it easier and faster to find specific characters in a font. It shows all the characters of your fonts in an interactive grid. Its zoom feature lets you see all the details of the glyphs. The key combinations required to produce specific characters are displayed, including key combinations that require multiple separate keystrokes. Font Explorer also fully supports Unicode, and lets you quickly jump from one Unicode section to another. A text entry field lets you preview and copy text in the selected font and style. Font Explorer is freeware. Font Explorer 1.3 for Classic Mac OS is also available.
More info and download link here.
awesome little app!