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Entertainment world mourns passing of friend, mentor Robin Williams

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LOS ANGELES -- Robin Williams, who died Monday at 63, was a comedic inspiration for many performers, and he also was a brilliant dramatic actor.

In 1998, he won an Academy Award for best actor in a supporting role for his performance in "Good Will Hunting."

In the video above, FOX31 Denver's Chris Parente interviewed Williams in November 2011, shortly after his marriage.

Here are some reactions from those who worked with Williams and those who looked up to him professionally:

Ellen DeGeneres @TheEllenShow

I can't believe the news about Robin Williams. He gave so much to so many people. I'm heartbroken.

Kathy Griffin @kathygriffin

I met this sweet, generous & brilliant man Robin Williams in 1991. Here we are with HIS idol Jonathan Winters.

Dane Cook @DaneCook

I'm in utter disbelief that Robin Williams is dead.

jason alexander ‏@IJasonAlexander

Ah Robin, I'm so sorry the earth couldn't stay worthy of you. Hope happiness awaits you.

George Lopez ‏@georgelopez

Robin Williams ~ Vaya Con Dios my friend , I love you

Fran Drescher ‏@frandrescher

So sad Robin Williams died :( We did 2 films 2gether. He was a very lovely man & kind caring person. My heart goes out 2 his loved ones.