(AP) James Gandolfini's fans and colleagues shared reaction to his death Wednesday:
"He was a genius. Anyone who saw him even in the smallest of his performances knows that. He is one of the greatest actors of this or any time. A great deal of that genius resided in those sad eyes. he was my partner. ... He was my brother in ways I can't explain and never will be able to explain." David Chase, creator of "The Sopranos."
"James Gandolfini. This is a tremendous loss. A brilliant actor and a wonderful man. Our deepest sympathies to his family. Devastating." Actor Michael Chiklis on Twitter.
"The great James Gandolfini passed away today. Only 51. I can't believe it." Bette Midler on Twitter.
"It's an awful shock. James Gandolfini was a fine actor, a Rutgers alum and a true Jersey guy. I was a huge fan of his and the character he played so authentically, Tony Soprano. I have gotten to know Jimmy and many of the other actors in the Sopranos cast and I can say that each of them are an individual New Jersey treasure." New Jersey Governor Chris Christie.
"James Gandolfini what a nice guy, so funny and sweet. He will be sorely missed. Our deepest condolences to his family." Aerosmith guitarist Joe Perry on Twitter.
"I am heartbroken about James Gandolfini. He was a gentle giant and great man. I love this picture, I loved him." Actress Rose McGowan, who posted a snapshot of her and Gandolfini on Twitter.
"My condolences to the family and all those who loved James Gandolfini - a true NJ Great and NJ Original. RIP." Newark Mayor Cory Booker on Twitter.
"You will be missed greatly James Gandolfini Maybe best actor ever on a tv series. Salute'" Comedian Artie Lange on Twitter.
"awful awful news. James Gandolfini will be missed. He was a great actor. Just great." Mia Farrow on Twitter.
"James Gandolfini. Unbelievably sad news. A fine man." Steve Carell on Twitter.
"My thoughts and prayers go out to James Gandolfini's family. An extraordinary actor. RIP, Mr. Gandolfini." Robin Williams.
"Fifty-one and leaves a kid -- he was newly married. His son is fatherless now ... It's way too young." Joe Gannascoli, who played Vito Spatafore on "The Sopranos."
"James Gandolfini.. So talented, so nice and far too young to be taken away. You will be missed Sir" Actress Shannen Doherty on Twitter.
"R.I.P. James Gandolfini. Such a great actor. More than just tony soprano and that would have been a lot on its own." Musician Rob Thomas on Twitter.
"I am so deeply saddened by the untimely passing of sweet James Gandolfini! My heart is broken for his family!! I'm in shock worked with him in "Surviving Christmas"" Christina Applegate on Twitter.
"James Gandolfini was a kind, funny, wonderful guy. I'm so lucky to have worked with him. Sending love to his family. Such a sad, sad day. worked with him on "The Incredible Burt Wonderstone"" Olivia Wilde on Twitter.