Robin Thicke is grieving the loss of his beloved father Alan Thicke, who died at 69 after suffering a sudden heart attack. The famous actor had been playing hockey with his son Carter, 19, when the heart attack occurred, according to ET.

Robin Thicke honors deceased dad

Heartbroken, Robin remembered his father and honored him on Instagram. Alan Thicke was "the best man I ever knew," wrote his 39-year-old son. "The best friend I ever had," reminisced Robin. But rather than focus on depression, Robin Thicke asked that everyone join him in celebrating the memory of his father. "Let's all rejoice and celebrate the joy he brought to every room he was in," added the 39-year-old.

Alan Thicke remembered

In addition to his son, Alan Thicke was remembered by "This Is Us" creator Dan Fogelman. Alan had appeared in a cameo on "This Is Us," and stole the show just prior to his sudden death, noted Us Weekly. "I was so saddened to hear about the passing of Alan Thicke," said Fogelman. "He was an absolute joy to work with and hang out with." The creator of the popular TV show emphasized that he spoke for the entire "This Is Us" cast when he offered his "deepest condolences" to Alan's family, friends and loved ones.

'This Is Us' cameo highlight

In the pilot of "This Is Us," Alan Thicke portrayed himself in a classic "show within a show" scenario. Kevin, played by Justin Hartley, was shown starring on a situation comedy.

When Kevin is told that after hitting his mark perfectly in a serious version, he has to redo and make it lighter (as well as shirtless), he quits after staging a meltdown more dramatic than any of the "Real Housewives" stars ever concocted.

Recalling his experience working with Alan, Justin turned to Twitter to honor the deceased actor.

"When you meet one of your idols and they are even nicer and cooler than you hoped they would be. That was [Alan Thicke]," wrote Hartley.

Heart attack shocker

Following his sudden heart attack, Alan Thicke was "coherent" and talking after his collapse, revealed an onlooker. However, soon after his collapse,he passed away at Providence Saint Joseph Medical Center.

He is survived by his wife, Tanya Thicke, and three sons: Robin, Carter and Brennan Thicke.

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