Executive Producer Cort Casady and Talent Producer Carole Propp have confirmed additional presenters to the talent line-up for the 2013 Writers Guild Awards L.A. ceremony this Sunday: Jessica Chastain (Zero Dark Thirty), Modern Family co-stars Julie Bowen and Rico Rodriguez, Jane Lynch (Glee), Steven Spielberg (Lincoln), Viola Davis (The Help), Kate Walsh (Private Practice), Stana Katic (Castle) joining her co-star Nathan Fillion, Amy Poehler (Parks and Recreation) and co-star Adam Scott, Anna Gunn (Breaking Bad), Walton Goggins (Justified), Alfred Molina (Monday Mornings), Mad Men creator Matthew Weiner, Aubrey Plaza (Parks and Recreation), Sam Waterston (The Newsroom), Brad Garrett (Everybody Loves Raymond), filmmaker Mark Duplass (The Mindy Project), screenwriters Jon Lucas & Scott Moore (The Hangover), and Key And Peele co-creators/co-stars Keegan-Michael Key and Jordan Peele.

The show will be directed by Joe DeMaio with Dave Boone returning as the show’s head writer. Contributing creative direction is the WGAW’s Awards Committee including Karen Harris (chair), Steve Chivers, Patrick Doody, Shelly Goldstein, Laurie Parres, and Scott Saltzburg.

The Writers Guild Awards honor outstanding writing in film, television, new media, videogames, news, radio and promotional writing, and graphic animation.  The awards will be presented jointly in all competitive categories during simultaneous ceremonies in New York at the B.B. King Blues Club and in Los Angeles at the JW Marriott L.A. LIVE.