Full Kirito/Asuna episode, the beginning of an arc, and looking to be one of the most important stories in the series so far. Very exciting. Even when hardly anything happens, the technical quality and the excellent presentation make Sword Art Online nearly constantly enjoyable to watch. The fights are spectacular, but seeing the main characters' feelings for each other develop is at least as nice.
Avatar: Tomoya Okazaki from Clannad/Clannad After Story (courtesy of Jun Kuga/Fudce from The Fandom Post)