Joseph N. Hall has programmed for a living since 1984, taught his first computer class at the age of 14, and has worked with Perl since 1993. Brian D Foy is author of Mastering Perl and Learning Perl Student Workbook, and co-author of several more books on Perl. He established the first Perl user group, the New York Perl Mongers; published the print magazine Perl Review; maintains perlfaq; and was a Perl trainer for ten years. Josh McAdams is the voice of Perlcast. He hosted two YAPC::NAs in Chicago, conducts meetings for Chicago.pm, has spoken about Perl at conferences worldwide, and is a CPAN author.