If Atlanta hasn't already caught the Christmas spirit by Black Friday Eve (Thanksgiving, to some), then it's about to get a big jolt from Lenox Square. The LIGHTING OF MACY'S GREAT TREE will illuminate the season with more than 5,000 bulbs and ornaments on the 70-foot white pine. "Entertainment Tonight's" Jann Carl hosts the ceremony, which features musical performances from Big & Rich, Emmy Rossum and more. Free. 7 p.m. 3393 Peachtree Road. 404-233-6767. www.lenoxsquare.com.