Don Hewitt, a fixture at CBS since 1948 -- among other achievements, he directed Edward R. Murrow's See It Now program and was the creator/executive producer of 60 Minutes until 2004 -- will switch to rival NBC to executive produce The Radio City Christmas Spectacular, to be co-hosted by the Today show's Matt Lauer and Meredith Vieira in December, NBC announced Wednesday. In a statement, the 85-year-old Hewitt said, "This 75th celebration will warm viewers' hearts with the magical holiday spirit that has created wonderful memories for more than 62 million people since its inception in 1933; I am thrilled to be involved."