The finale of the fourth season of Bravo’s reality series “Kathy Griffin: My Life on the D-List,” follows the comedienne as she visits wounded soldiers at Walter Reed Army Medical Center, and Tom Shales of the Washington Post says it’s good medicine. “Griffin’s visit to Walter Reed is a captivating little slice of television, and of life,” Shales writes. “‘They need a laugh,’ Griffin said of the soldiers before embarking for the hospital, and the felicitous and salutary result is Mission Accomplished — this time for real.”