There were a few familiar faces at reunion weekend at Phillips Academy in Andover. Hollywood heavyweight Dick Wolf, producer of the wildly successful (and oft-imitated) “Law & Order” franchise, was back for his 50th reunion, as was Duke University president Richard Brodhead, and actress Dana Delany, perhaps best known for her role on the TV series “China Beach,” was back for her 40th reunion. There was no sign of former President George W. Bush, who was Class of ’64 but may have been busy helping his father, former President George H.W. Bush, celebrate his 90th birthday at the family’s compound in Kennebunkport, Maine.Mark Shanahan can be reached at firstname.lastname@example.org. Follow him on Twitter @MarkAShanahan. Meredith Goldstein can be reached at email@example.com. Follow her on Twitter @MeredithGoldste.