This loss has been difficult for celebs to process.
And, it seems Mel Brooks is having a particularly tough time coping with the death of Gene Wilder, who passed away on Monday due to complications with Alzheimer's disease.
The comedian stopped by The Tonight Show on Tuesday, and opened up to Jimmy Fallon about how much he misses his comedic partner in crime, saying:
"He was sick, and I knew it. And he was such a dear friend. I expected it. I expected he would go but, I don't know, when it happens, it's still tremendous. It's still a big shock, you know. I'm still reeling from that no more Gene. I can't call him. And he was such a wonderful part of my life."
Even though recalling his fondest memories of the Willy Wonka & The Chocolate Factory star was clearly emotional for the New York native, he went on to describe some of his best moments with the acclaimed actor.
He hilariously recounted the first time he met the thespian, pitching The Producers to him, crafting the concept for Young Frankenstein together, and many other enjoyable encounters.
And, Mel even got the audience laughing in the wake of Gene's sad passing. Take a look at the clip (above) for the filmmaker's touching tribute.