Stars Remember Leslie Nielsen

Credit: Kevin Winter/Getty Images

Stars are paying tribute to Naked Gun star Leslie Nielsen, who died Sunday at age 84 due to complications of pneumonia.

On Twitter, many cited his classic line from Airplane!: "I am serious . . . and don't call me Shirley."

Here's what else they had to say:

Ryan Seacrest: Sad to hear about Leslie Nielsen passing. To this day "Airplane" is still one of my favorite comedies ever.

Marlee Matlin: A lovely man and acquaintance passed away today - Leslie Nielsen. What a lovely, funny, talented man. He will be missed. RIP

Brooke Burke: So sad to hear about Leslie Neilson passing. Prayers to his loved ones.

Nia Vardalos: RIP Leslie Nielsen. Shirley, you'll be missed.

Russell Brand: RIP. Leslie Nielsen. Shirley, he will be missed. Slash: RIP Leslie Nielson, one of my all time favorite comedians. U my friend, will be missed big time. Wow, what a loss. Iii|: ( "& don't call me Shirley."

Josh Groban: Shirley, this breaks my heart RT @nytimesarts Leslie Nielsen, Hero, Then Hilarious Actor, Dies at 84