As part of the Birmingham Perl Mongers World Tour, I recently gave my "Excel on the Command Line" talk to the Gloucester Linux User Group.
A few days later I received an email from one of the attendees who'd tried out the accompanying software, XLSperl (which lets you use Perl one-liners to process Microsoft Excel files), with a few suggestions.
So, after a few train journeys spent hacking code I've released a new version which has the following improvements: