Neil Patrick Harris, he of Doogie Howser, How I Met Your Mother, and the Harold and Kumar flicks, is going to be a dad two times over (via surrogate) with longtime partner David Burtka. " So, get this: David and I are expecting twins this fall. We're super excited/nervous/thrilled. Hoping the press can respect our privacy," he tweeted, confirming an earlier report in E! Online. (More Neil Patrick Harris stories.)