UPDATED: Tue, Jul 12, 10:17AM The Playback Room will be showing the following panel presentations from either or both Hall H and Ballroom 20: Supergirl Special Video Presentation and Q&A, DC’s Legends of Tomorrow Special Video Presentation and Q&A, The Flash Special Video Presentation and Q&A, and Arrow Special Video Presentation and Q&A. (Please note: these playbacks will include only the panel discussions. None of the film clips or footage shown at the live events will be shown here.)