ESRI has an old set of PDFs from 2004 showing all the symbols available in ArcGIS at the time and their names. I don't need it often but if I'm searching for a certain symbol and don't know its name it's sometimes easier to look at a few sheets of paper than to use the Symbol Selector. It doesn't seem like it's been updated for ArcGIS 10, though. I was wondering if anyone is aware of a new version of this, or if anyone has created one on their own they might be willing to share.
Matt are you looking for Symbols to Print from ArcGIS 10?
Credit to Brad Nesom on GIS Stack Exchange Is there ArcGIS Symbol Library PDF for ArcGIS Desktop i.e. index for symbols/line weights?
This is not current but its a start: http://downloads2.esri.com/support/documentation/ao_/Utilities.pdf