Veteran American actor Tony Sirico, known for playing Paulie Walnuts in 'The Sopranos' and Tony Stacks in 'Goodfellas', passed away aged 79 on Friday. Sirico died at an assisted living facility in Fort Lauderdale, Florida, said his manager, Bob McGowen. Michael Imperioli, who portrayed Christopher Moltisanti on 'The Sopranos', mourned Sirico's demise, saying he will miss him forever.