Vincent Pastore, the actor forever linked to Salvatore "Big Pussy" Bonpensiero on The Sopranos, has died at the age of 80. He was found inside his Bronx apartment after neighbors hadn't heard from him for several days. Authorities are investigating the circumstances of his death, but no cause has been announced. Pastore became a television icon as Tony Soprano's close friend who secretly turned FBI informant, delivering one of the series' most memorable and heartbreaking storylines. Before The Sopranos, the Bronx native appeared in mob classics including GoodFellas, Carlito's Way, and HBO's Gotti. A Navy veteran who served during the Vietnam War, Pastore didn't begin acting full-time until later in life after running bars and clubs in New York. His career expanded beyond gangster roles with appearances on Law & Order, Blue Bloods, Yellowjackets, Dancing with the Stars, Celebrity Apprentice, and Broadway productions including Chicago and Bullets Over Broadway. He also battled and survived prostate cancer while continuing to perform on stage. In recent years, Pastore ran his own theater company, frequently reuniting with fellow Sopranos cast members.