George Clooney, Tom Hanks and Julianne Moore have added their tributes to the late, great Philip Seymour Hoffman as Hollywood continues to come to terms with the actor's shocking death. The Oscar winner was found dead from an apparent drug overdose in his New York City apartment on Sunday (02Feb14), and friends and former co-workers like Mia Farrow, Jim Carrey, Whoopi Goldberg, Steve Martin and Evan Rachel Wood were among the first celebrities to express their condolences via Twitter.com. Now Clooney admits the death of his The Ides of March co-star has left him speechless, stating, "There are no words... it's just terrible", while Hanks says of his Charlie Wilson's War colleague, "This is a horrible day for those who worked with Philip. He was a giant talent." Actress Moore has also added her voice to the outpouring of Hollywood tributes after co-starring with Hoffman in Boogie Nights, Magnolia and The Big Lebowski. They had also completed work on the upcoming The Hunger Games: Mockingjay - Part 1 and had been in the middle of filming Mockingjay - Part 2 at the time of his passing. She says, "I feel so fortunate to have known and worked with the extraordinary Philip Seymour Hoffman, and am deeply saddened by his passing." Another Boogie Nights castmate, Mark Wahlberg, adds, "Saddened by the passing of friend and colleague Philip Seymour Hoffman...such a tragic loss. Miss you, Scotty J. RIP." And Gwyneth Paltrow, who teamed up with Hoffman for 1999 thriller The Talented Mr. Ripley, also commented on the tragedy by sharing an old photo of the pair with fellow co-star Jude Law during their stay in Italy for the movie shoot. In the accompanying caption, she wrote, "Ischia 1998, post dinner, post shooting... Philip was a true genius." Broadway theatre bosses will dim their marquee lights on Wednesday night (05Feb14) in memory of the triple Tony Award nominee. The Master star won high praise and a Tony nod for each of his three outings on the Great White Way - his debut in True West in 2000, his follow-up performance in Long Day's Journey into Night in 2003, and his turn in a 2012 production of Death of a Salesman. Charlotte St. Martin of the Broadway League says, "Philip Seymour Hoffman, a three-time Tony Award nominee, was a true artist who loved the theatre. His prolific body of work encompassed various mediums including theatre, film and television, and we'll always be grateful for his boundless and profound talent that he shared with us on the Broadway stage. Our thoughts go out to his family, friends and fans."