TV Article Matt Damon: Why he hasn't acted in a Ben Affleck movie 6 highlights from the actor's Reddit AMA By Derek Lawrence Derek Lawrence I currently write about Fast & Furious, The Office, and Will Smith. One day, I will write Hitch 2. EW's editorial guidelines Published on July 19, 2016 12:00PM EDT Photo: George Kraychyk Over his career Matt Damon has taken on the U.S. government, outer space, Las Vegas casinos, and a virus that wiped out much of the world, but on Monday he took on what might be the scariest challenge yet — Reddit. Ahead of the July 29 release of Jason Bourne, Damon participated in a Reddit AMA (“ask me anything”) to answer questions from fans. Among the hot topics discussed: Why he it took him so long to return to the Bourne franchise, when he will work with Ben Affleck again, and who his favorite costar of all time is. Here are the highlights: 1. Why he hasn’t been in a Ben Affleck movie The two are both really busy, but it’s mainly Ben’s fault.Comment from discussion I am Matt Damon, Ask Me Anything!. 2. Why it took so long to return to Bourne He was waiting on director Paul Greengrass and a good enough story.Comment from discussion I am Matt Damon, Ask Me Anything!. 3. The best actor he’s ever worked with He’s worked with some heavyweights, but Damon says Casey Affleck is quite the talent.Comment from discussion I am Matt Damon, Ask Me Anything!. 4. About that Team America portrayal… Damon wasn’t ecstatic about the way he came off in the film from the South Park creators.Comment from discussion I am Matt Damon, Ask Me Anything!. 5. On working with Robin Williams He fondly looks back on his time working on Good Will Hunting with the late actor.Comment from discussion I am Matt Damon, Ask Me Anything!. 6. Is a hot dog a sandwich? Jason Bourne himself weighs in on the heated debate.Comment from discussion I am Matt Damon, Ask Me Anything!. Jason Bourne hits theaters on July 29.