Fans of Bob Barker may think he’s irreplaceable on The Price Is Right, but CBS is in the midst of finding a new host for the successful game show once the 84-year-old host retires in June. Several Hollywood vets have already tested for the high-profile job — in fact, studio audiences were invited via CBS’ website to attend test tapings featuring several potential hosts: Dancing With the Stars alums George Hamilton, Mario Lopez, and John O’ Hurley, as well as Game Show Marathon host Todd Newton and The Early Show‘s weatherman Dave Price. Not invited to try out? The View‘s Rosie O’Donnell, who recently told the audience at her ABC yakker that she’d love to fill Barker’s very big shoes. An announcement about Barker’s replacement is unlikely to be made until after the venerable host leaves in June.