David OReilly (b. Ireland, 1985) is a filmmaker and artist based in Los Angeles. Creator of the influential short films ‘Please Say Something’ and ‘The External World’, his animation work has won numerous awards and been the subject of several international retrospectives. He has lectured at Pixar, Harvard, Yale, USC, CalArts and at many other conferences and festivals around the world. He has written for Adventure Time & South Park, and created fictional video games in Spike Jonze’s Academy Award winning film 'Her'.