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 this year is heavily tilted toward nostalgia.

Music plays a sizable role in all this, not surprisingly, with director Peter Jackson's multi-part documentary "The Beatles: Get Back" making its debut on Disney+, a few days after a film devoted to another '60s act, the Beach Boys, hit theaters and on demand with the touching "Brian Wilson: Long Promised Road."