The Daily Show with Jon Stewart
Peter Dinklage is coming to The Daily Show to promote the premiere of Game of Thrones season four, which airs this Sunday, April 6 at 9:00pm ET. NO SPOILERS, DINKLAGE.
3/31: Peter Dinklage (actor, Game of Thrones)
4/1: Michael Lewis (author, Flash Boys: A Wall Street Revolt)
4/2: Samuel L. Jackson (actor, Captain America: The Winter Soldier)
4/3: Pelé (former professional soccer player & author, Why Soccer Matters)
The Colbert Report
Everyone who watches The Colbert Report knows Stephen Colbert loves to tweet—even if last week's #CancelColbert campaign was not the highlight of his relationship with Twitter. In any case, he'll probably be pretty stoked to hang with Biz Stone.
3/31: Biz Stone (Co-founder of Twitter and author, Things a Little Bird Told Me: Confessions of the Creative Mind)
4/1: John Malkovich (Film, Cesar Chavez)
4/2: Dan Harris (Author, 10% Happier: How I Tamed the Voice in My Head, Reduced Stress Without Losing My Edge, and Found Self-Help That Actually Works—A True Story). 
4/3: Mark Mazzetti (Author, The Way of the Knife
Kumail Nanjiani was the first-ever @midnight winner back in October. Then he won again in January. Let's see if he can bag a third win this week!
3/31: Seth Green, Kevin Shinick, Rachel Bloom
4/1: Kumail Nanjiani, T.J. Miller, Thomas Middleditch
4/2: Amber Tamblyn, Rhys Darby, Kurt Braunohler
4/3: Patton Oswalt, Morgan Murphy