Legendary Beatles member John Lennon was killed on Dec. 8, 1980, at age 40. Here are 15 photos reflecting the singer's most memorable moments to honor his enormous life and legacy.

There are still folks to whom my yearly holiday greeting is “Merry Krimble,” a classic onomatopoeiacal Beatle-ism uttered on the first two singles by Paul and John. To people in the know, it was a Bat Signal of cool, or at least close enough to it.

From Paul Mescal as Paul McCartney to “Shōgun” star Anna Sawai as Yoko Ono, here’s who’s playing who in the four interconnected Beatles biopics.

A close confidant revealed John Lennon used to get "insanely jealous" over Paul McCartney hits in the post-Beatles years.