This guy was an ex PM for Excel at Microsoft. He even had Bill Gates review his spec: http://www.joelonsoftware.com/items/2006/06/16.html http://www.joelonsof

This guy was an ex PM for Excel at Microsoft. He even had Bill Gates review his spec: http://www.joelonsoftware.com/items/2006/06/16.html http://www.joelonsoftware.com/items/2006/06/16.html