Mike O’Malley had toplined two short-lived comedy series when he was cast as a lead in CBS’ Yes, Dear, co-created by Alan Kirschenbaum and Greg Garcia. The sitcom went on to run for six seasons, making O’Malley a household name. O’Malley and Kirschenbaum subsequently worked together on Garcia’s NBC comedy My Name Is Earl, on which O’Malley recurred and Kirschenbaum served as a consulting producer. Like all of Kirschenbaum’s friends, O’Malley was shocked and saddened by the news of his sudden passing. Here is what the actor, now also a TV writer, told Deadline about his former boss.

“Alan Kirschenbaum was an amazing boss, colleague and friend. Funny, funny man with a huge heart. Beloved by countless friends–and now missed by them all. Rest in Peace.”

Related: Greg Garcia remembers Alan Kirschenbaum