All of the teasers are compiled below, though apparently the Arrow one can only be found at ETOnline for now.
Underneath you can see the photos if you missed them earlier. The crossover begins December 8 on The CW and runs for three nights between three shows; it all concludes in January with Arrow and Legends of Tomorrow.
KSiteTV Editor-In-Chief Craig Byrne has been writing about TV on the internet since 1995. He is also the author of several published books, including Smallville: The Visual Guide and the show's Official Companions for Seasons 4-7.