Diane Keaton has never followed the typical path of a Hollywood starlet. Even while appearing in some of the most iconic films of her era and dating high-profile figures, she has remained unmistakably herself—eccentric, approachable, and full of a unique charm. Her individuality and authenticity made her a muse for filmmakers like Woody Allen and Nancy Meyers, shaping some of the most memorable movies of her generation.

Known for her self-deprecating humor, Keaton’s modesty often reflected deeper insecurities. She struggled with body image issues, battled eating disorders, and frequently underestimated her own talent. Yet these personal struggles became a source of strength, infusing her performances with emotional depth and honesty rarely seen in Hollywood.

Her career spans decades and genres, from Allen’s neurotic comedies to family classics like Father of the Bride, from bold dramas such as Marvin’s Room to cult favorites like Shoot the Moon. Here are six essential roles that showcase the versatility and brilliance of Diane Keaton:

The Godfather (1972)

Keaton’s breakout role as Kay Adams could have been overshadowed by the larger-than-life characters around her. Yet she brought subtlety and nuance to Michael Corleone’s wife, creating a character with depth and quiet strength. Her poised, thoughtful performance shines in the film’s haunting final moments.

Francis Ford Coppola reflected on casting her:

"Although you were to play the more straight/vanilla wife, there was something more about you, deeper, funnier, and very interesting. (I was right)."

Where to watch: Available to rent on digital platforms, including Prime Video.

Annie Hall (1977)

Keaton’s portrayal of Annie Hall remains one of her most celebrated roles. The character’s quirks, insecurities, and charm mirrored Keaton’s own personality, allowing her to shine naturally on screen. She designed her iconic wardrobe—khakis, vests, and ties—drawing inspiration from real New Yorkers, creating a look that has endured as a fashion statement for decades.

Reflecting on the film, she said:

"No one had any serious expectations. We were just having a good time moving through New York’s landmark locations… Woody worried about the script, but I told him he was nuts. Relax."

Where to watch: Streaming on Fubo TV.

Looking for Mr. Goodbar (1977)

In a darker, more intense turn, Keaton plays Theresa Dunn, a Catholic schoolteacher by day who explores dangerous nightlife by night. Her fearless performance revealed a complex, conflicted character, showing a side of Keaton rarely seen before. The film has gained cult status and is now available digitally.

Reds (1981)

Keaton starred opposite Warren Beatty in this historical epic about journalists during the Russian Revolution. Playing journalist and activist Louise Bryant, she balanced personal and professional struggles against a backdrop of political upheaval. Her memoir recounts the challenges of working with Beatty’s perfectionist approach, making her performance an intricate dance of reaction and resilience.

"It was impossible to work with a perfectionist who shot 40 takes per setup… Even now, I can’t say my performance is my own. It was more like a reaction to Warren," she recalled.

Something’s Gotta Give (2003)

Keaton shines as Erica Barry, a 50-something playwright who unexpectedly becomes the object of desire for both an older Playboy and a younger doctor. The role celebrates mature women as romantic leads, and Keaton’s charm and wit make her performance unforgettable. She has called it one of her favorite roles, particularly because it gave her an unexpected on-screen kiss with Jack Nicholson at age 57.

Baby Boom (1987)

In this comedy, Keaton plays a career-driven Manhattan woman who suddenly inherits a 14-month-old child. As she rethinks her priorities, she relocates to Vermont, discovers a new lifestyle, and forms a romance with a veterinarian played by Sam Shepard. The film combines humor, heart, and social commentary, reflecting the balance of career and personal life that resonates with audiences even today.