Sarah Silverman: "Norm was in a comedy genre of his own. No one like him on this planet. Please do yourself a favor and watch his stuff. He

Sarah Silverman: "Norm was in a comedy genre of his own. No one like him on this planet. Please do yourself a favor and watch his stuff. He was one of a kind of all time."

John Stamos: "Usually when you see a celebrity trending, you check it out because you're afraid they may have died. You click their name and most of the time it's something innocuous. Not this time sadly, #RIPNormMacdonald." 

Steve Martin: "We loved Norm Macdonald. One of a kind." 

Ike Barinholtz: "I've got so many laughs in my life by just repeating Norm Macdonald jokes. One of the funniest to ever do it—RIP to a king."

Patton Oswald: "NOOOOO GODDAMIT. Oh my God what is even happening. Good bye, Norm. You were never not 100% hilarious."

Jimmy Kimmel: "Norm didn't just make us laugh, he made us laugh hard. Rest well, you crazy bastard." 

Eugene Levy: "Today the world lost a very, very funny man. We miss him already. R.I.P Norm Macdonald."