Strap your face to your head and make sure you've got the right dosage, otherwise this could be a messy affair. Tonight, Fri., MARCH 16, the Fox Theatre hosts the two-hour 3D-HD PINK FLOYD LASER SPECTACULAR. Combine the Fox's trippy skyscape with the show's lights and colors, and WOW: "I have become comfortably numb." This year's edition features Dark Side of the Moon and The Wall, a gigantic multiscreen video projection, and kaleidoscopic lasers. The best part: the free 3D-HD glasses. $23-$32. 8 p.m. 660 Peachtree St. 404-881-2100. www.foxtheatre.org.