By Jessica Derschowitz
Updated July 21, 2015 at 05:29 PM EDT
Jay Paul/Getty Images

Robin Williams would have been 64 years old on Tuesday, July 21, and fans and movie lovers alike are marking the day with tributes to the late actor.

While Williams, who died almost a year ago on Aug. 11, returned to theaters with his final on-screen role earlier this month in Boulevard, many are also likely remembering his many memorable (and quotable) roles from years past.

From playing Mork from Ork and seizing the day in Dead Poets Society to being Aladdin’s Genie and the titular Mrs. Doubtfire, have a good laugh (and maybe shed a few tears) by looking back at some of the actor’s best work in the video below.

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Robin Williams: His greatest roles

Actor pays tribute to Robin Williams with 20 uncanny impressions