The Watchmen Instagram feed put out three brief videos today to tease the upcoming HBO series. The glimpses are extremely brief (although I have a feeling that we’ll get our first real trailer tied to the series finale of Game of Thrones as HBO tries to shift the audience to a new expensive adaptation of a well-known title), but they do provide an interesting look at the alternate America presented in Damon Lindelof’s adaptation. The scythe with the pirate flag is reminiscent of Tales from the Black Freighter, the “Reach out and touch Mars” bit is a …