Zombies are invading Charlotte, and you're either with 'em or you're not. I'd say the first option is the best choice — if you want to keep your brain. During The 4th Annual Charlotte Zombie Walk, folks dress up in their undead best to walk the streets of the Q.C. in what appears to be a spectacle like something straight outta Michael Jackson's "Thriller" video. The fun starts at Phil's in Uptown with a blood drive for the Red Cross and donations for Costumes for Kids. Then it's to the streets for the prowl. Free. Blood drive, 4 p.m.-8:30 p.m.; walk, 9 p.m.-10:30 p.m. Phil's NYC Deli and Tavern, 105 E. 5th St. 704-347-0035 For more information, visit www.facebook.com/event.php?eid=130342926996969 or www.myspace.com/charlottezombiewalk.