Born on July 21, 1951, in Chicago, Illinois, Robin Williams possessed a lightning-fast mind and an extraordinarily generous heart. He didn’t just perform; he exploded onto the screen with an unfiltered, hyper-kinetic energy that felt like pure, unscripted magic. Yet, behind the rapid-fire impressions and dizzying comedic riffs lay a deeply sensitive dramatic actor capable of delivering quiet, devastating, and deeply human performances.

Though he left us in 2014, his films continue to comfort, inspire, and entertain new generations. To celebrate his milestone 75th birth anniversary today, we are counting down his 10 most remembered and beloved screen performances.

The 10 Most Remembered Roles of Robin Williams

1. Sean Maguire in Good Will Hunting (1997)

If you want to understand the true depth of Robin Williams’ soul as an actor, look no further than his Oscar-winning performance as Dr. Sean Maguire. Playing a grieving Boston therapist tasked with reaching a troubled young math genius (Matt Damon), Williams anchored the film with immense stillness and empathy. His famous park-bench monologue and his quiet, repetitive reassurance—“It’s not your fault”—remain among the most emotionally resonant scenes in movie history.

2. John Keating in Dead Poets Society (1989)

As the unconventional English teacher John Keating at an elite, rigid boarding school, Williams inspired an entire generation to look at life through a different lens. Encouraging his young students to “seize the day” (Carpe Diem) and stand on top of their desks to gain a new perspective, he delivered a performance so uplifting that the iconic scene where students chant “O Captain! My Captain!” still gives viewers goosebumps decades later.

3. Daniel Hillard / Mrs. Euphegenia Doubtfire in Mrs. Doubtfire (1993)

Few actors on earth could have pulled off Mrs. Doubtfire without turning it into a cheap cartoon. Williams played Daniel Hillard, a devoted father who disguises himself as an elderly Scottish nanny to spend time with his kids after a painful divorce. Blending chaotic physical comedy (runaway hot flashes, pie-face masks) with genuine emotional longing, Williams created a box-office giant that remains an absolute staple of ’90s cinema.

4. The Genie in Disney’s Aladdin (1992)

Before Aladdin, animated movies rarely built major characters around the specific, unscripted persona of a celebrity actor. Directors Ron Clements and John Musker let Williams loose in the recording booth, letting him improvise hundreds of impressions, pop-culture references, and musical riffs. The animators then built the character around his vocal storm, creating The Genie—a character so iconic it completely revolutionized voice acting in modern animation.

“You’re only given a little spark of madness. You mustn’t lose it.” — Robin Williams

5. Adrian Cronauer in Good Morning, Vietnam (1987)

Director Barry Levinson gave Williams his true big-screen breakthrough by opening the microphone and letting his natural stand-up instincts take flight. Playing Armed Forces Radio DJ Adrian Cronauer during the Vietnam War, Williams improvised much of his manic on-air broadcasts, capturing both the absurdity of war and the genuine humanity of bringing joy to soldiers facing unthinkable odds. It earned him his first Academy Award nomination for Best Actor.

6. Armand Goldman in The Birdcage (1996)

While Williams was world-famous for taking up all the air in a room, Mike Nichols’ hit comedy The Birdcage proved he was just as brilliant playing the straight man. As Armand Goldman, the owner of a South Beach drag club trying to host a conservative politician (Gene Hackman), Williams let Nathan Lane handle the theatrical flamboyance while he provided the warm, hilarious, and grounded glue holding the chaos together.

7. Peter Banning / Peter Pan in Steven Spielberg’s Hook (1991)

Steven Spielberg’s fantasy adventure dared to ask a fascinating question: What if Peter Pan grew up, forgot his past, and became an overworked corporate lawyer? Williams was the only actor who could believably journey from a cold, phone-obsessed suit to a joy-filled, sword-wielding hero who discovers his inner “happy thought.”

8. Alan Parrish in Jumanji (1995)

For kids of the 1990s, Williams was the ultimate cinematic protector. In Jumanji, he played Alan Parrish, a man trapped inside a mystical board game for 26 years who is suddenly released back into the real world. Williams effortlessly balanced childlike terror with heroic bravery as he fought off stampeding rhinos, giant spiders, and a vengeful hunter.

9. Parry in The Fisher King (1991)

Under the direction of Terry Gilliam, Williams delivered one of the most raw, tragic, and fantastical performances of his career. Playing Parry, a homeless man suffering from severe hallucinations following a personal tragedy, Williams moved seamlessly between wild manic energy and quiet, heartbreaking sorrow. His performance earned him his third Oscar nomination.

10. Seymour “Sy” Parrish in One Hour Photo (2002)

To prove his incredible range late in his career, Williams deliberately shed his warm, lovable persona to star in Mark Romanek’s disturbing psychological thriller. Playing “Sy the Photo Guy,” a lonely photo technician who becomes obsessed with a suburban family, Williams delivered a quiet, chilling, and tragic performance that completely caught critics and audiences off guard.