Neil Patrick Harris (born June 15, 1973) is an American actor, singer, director, producer and magician. He is best known for the title role in Doogie Howser, M.D., the womanizing Barney Stinson in How I Met Your Mother, a fictionalized version of himself in the Harold & Kumar series, and the title role in Joss Whedon’s musical web series Dr. Horrible’s Sing-Along Blog.