Stephen Amell, Grant Gustin, Melissa Benoist, Caity Lotz and Greg Berlanti visited EW Popfest this weekend and talked about the big four show crossover. There's a lot of humor in the interview including Gustin saying how the crossover means a lot of leather and Amell talking about the 100th episode and how it was approapriate that it's part of a crossover. Berlanti says that it seems like in the middle of the season there is now a 3-hour movie basically.