If you’ve been listening to WFPL in the afternoons, you’ve no doubt heard Q. This summer, there’s been an array of guest hosts (including my favorite, Terry O’Reilly of The Age of Persuasion). In other guest host news, Christopher Walken will guest host host the Leonard Lopate show on WNYC next Monday. This comes after Alec Baldwin‘s stint filling in for Kurt Andersen on Studio 360.