This afternoon, Robert Osborne was trending worldwide as fans of Robert Osborne, as well as friends, mourn the death of the longtime host of Turner Classic Movies, who died Monday at 84 after suffering from undisclosed health problems. Osborne served as the face of TCM since its launch in 1994; the longtime industry columnist also authored many books on the history of the Oscars, including 1965’s Academy Awards Illustrated and The Official History of the Academy Awards.

Longtime friend Liza Minnelli said in a statement to Deadline:

“It was evident to anybody who watched Robert Osborne on Turner Classic Movies that his knowledge about Hollywood and film was second to none. He was an indispensable guide to viewers who tuned in everyday to hear his thoughts. Often, if I couldn’t remember the name of an actor or a particular film, I’d ring him up and he’d instantly know the answer.”

TCM shared a touching video with Osborne’s friends and colleagues; industry figures including Cher, Patton Oswalt, Patricia Arquette, Gilbert Gottfried, and others expressed their grief on social media. Watch the video here:

The Academy of Motion Picture Arts and Sciences also shared some kind words on Facebook, writing, “The Academy is deeply saddened by the passing of our beloved friend Robert Osborne. An Oscars historian, he worked tirelessly to document our organization’s rich history, and he was our gracious greeter on the Academy Awards red carpet for several years.” Read the full statement below:

“I was saddened by the death of Robert Osborne, a remarkable and special man,” actress Eva Marie Saint told Deadline in a statement. “I have wonderful memories of being interviewed by him and answering his insightful questions. Robert was an endearing and talented man. He brought so much joy to people around the world by sharing his knowledge and love of film. I will miss him dearly.”

Here a sampling of remembrances from friends, colleagues and many others: