TV OT: 'Licorice Pizza,' 'The Beatles: Get Back' and 'The Waltons' serve up nostalgia over Thanksgiving

Thanksgiving weekend is theoretically all about family. Yet in terms of entertainment options -- to consume with them or as a means of escaping them -- the prevailing theme is heavily tilted toward nostalgia, with projects rooted in the 1960s, '70s and '90s.

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