The Baltimore Sun profiles “Gerry from Pikesville,” an 81-year-old retiree who has made regular calls to Diane Rehm, Talk of the Nation and local talk shows for almost four decades. “I get a lot of e-mails about Gerry,” says WYPR-FM host Marc Steiner. “People love him and say we should have him on as a guest, and other people say can’t you shut him up?”