Hollywood's leading stars pay tribute to Oscar-winning actor Philip Seymour Hoffman who was found dead in a New York apartment from a suspected drug overdose.<br/> <br />At the world premiere of "The Monuments Men" in New York, Matt Damon, who appeared with Hoffman in "The Talented Mr. Ripley", called his former co-star a special talent.<br/> <br />SOUNDBITE: Actor, Matt Damon, saying (English):<br/> <br />"He was a really special human being. He was one of the best actors who ever lived without a doubt. And anybody who worked with him felt that, felt grateful for having a chance to work with him. I hope something comes of it somehow, but I can't see how that would be - it just feel like a horrible big black hole."<br/> <br />The actor and director George Clooney said it was tough to be at the premiere in light of Hoffman's passing.<br/> <br />SOUNDBITE: Actor, George Clooney, saying (English):<br/> <br />"Well, I mean there is no other reaction. Just shock and horror and sorrow. It's very difficult and very tricky
