Ann Morgan Guilbert, beloved as the next-door neighbor on The Dick Van Dyke Show and seen recently on the CBS comedy Life in Pieces, has died. She was 87. Guilbert died of cancer on Tuesday in Los Angeles, her daughter Nora Eckstein said. Recent TV appearances included a starring role on the hospital comedy Getting On and a guest spot on Grey's Anatomy. Guilbert was a regular as feisty Grandma Yetta on the 1990s sitcom The Nanny, and in the early 1960s, played Millie Helper, Laura Petrie's perky pal, on the acclaimed Van Dyke series.