On today's What to Watch: Peter Jackson directs the three-part docuseries The Beatles: Get Back, examing what many have reported to be a contentious time for the Fab Four while making their Let It Be album; Gossip Girl returns for the second half of its first season, with secrets and scandals threatening to surface; and the late DMX is in the spotlight in DMX: Don't Try to Understand, the latest doc in HBO's Music Box series. EW's Marcus Jones tells us about his most recent TV binge of a killer TV series. Plus, how Saved by the Bell said goodbye to the character Screech and actor Dustin Diamond, and trivia.

More at ew.com, ew.com/wtw, and @EW.

Host: Gerrad Hall (@gerradhall); Editor/Producer: Joshua Heller (@joshuaheller); Writer: Tyler Aquilina (@tyler_aquilina); Executive Producer: Shana Naomi Krochmal (@shananaomi).

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