Currently on the Contact Detail View there is the option to tick a contact as the Key Contact. On the Company Detail View there is the option to bring the Key Contact column onto the page so that at a glance you can see for a particular company who the key contact is, and pick up their contact details and title.
I have not found a way to bring this information through to the Company List View via column selection, so that at a glance you can see the Company, Phone, Address and the Name and Title of the Key Contact for a number of companies in list view. This would be helpful so that you could see at a glance who the key contact is for a number of companies in list view and when creating company lookup reports and sending company list lookups to excel.
Although a workaround can be achieved via the Contact List View, it is not ideal as the focus here is on contacts and not companies.