The Arrow fandom is immensely creative. There are over 3,500 fan-created trailers on YouTube for the show.
This is partly why fans are so annoyed that the season 4 trailer is not finished yet. It's like watching paint dry with these studio people.
MTV News recently asked Arrow fans to short-list our favorites fan-vids. One of my favorites was number 11 in their top 17, by the über-talented Kristina Ortutova.
Oliver & Felicity "I don't regret a single moment," based around the über-memorable season 3, episode 20 "The Fallen."