LOS ANGELES (CBSLA.com) — Celebrities took to Twitter on Monday to pay tribute to Oscar-nominated actor Michael Clarke Duncan, who passed away at the age of 54.

(credit: David Livingston/Getty Images)

Was fortunate to work with Michael Clarke Duncan on Sin City. A very kind and generous actor. He'll be greatly missed. yfrog.com/oddexatj—
Robert Rodriguez (@Rodriguez) September 04, 2012

Will miss you @OfficialMCD Thanks for being so kind & awesome. #GenuineArticle say.ly/KEQ45YI—
Seth Green (@SethGreen) September 03, 2012

So sad & shocked to hear of the death of Michael Clarke Duncan. Only 54 years old- he never recovered from his heart attack in July RIP sir—
Sherri Shepherd (@SherriEShepherd) September 03, 2012

. @OfficialMCD I cant believe you are gone my friend. I will miss our Lakers vs Mavs bets and texts . You will not be forgotten. RIP—
Mark Cuban (@mcuban) September 03, 2012

My prayers go out to @OfficialMCD @omarosa and his family.—
Evander Holyfield (@holyfield) September 03, 2012

Blessed to have had the opportunity to work with Michael Clarke Duncan while he was still with us. He was a kind soul that will be missed.—
Zachary Levi (@ZacharyLevi) September 03, 2012

RIP Michael Clarke Duncan Heaven has an amazing new angel. I will miss your smile most say.ly/Mgq45YE—
Holly Robinson Peete (@hollyrpeete) September 03, 2012

"When something happens, we always say it happens for a reason"
~ Michael Clarke Duncan 12/10/57 – 9/3/12 I'll miss you my brother..—
Dwayne Johnson (@TheRock) September 03, 2012

I will miss my friend, Michael Clarke Duncan. What an incredible soldier in God's Plan.—
Steve Harvey (@IAmSteveHarvey) September 03, 2012

So sad to hear #MichaelClarkeDuncan died! He was a gem of a man & an actor w/ a radiant heart & a big laugh. #RIP—
RainnWilson (@rainnwilson) September 04, 2012

I'll always have the most wonderful memories of Michael Clarke Duncan what a beautiful childlike spirit he forever be missed RIP Michael x—
Natasha Henstridge (@nathenstridge) September 04, 2012

Sharon Tay from CBS2/KCAL9 was friends with Duncan. She said, “Michael was a dear, dear friend. He lighted every life he touched. I will miss his love, his laughter, his kindness…and his beautiful soul. RIP my gentle giant.”