On June 10, 2007, Tony Soprano walked into Holsten's diner and never walked out.That's right, folks, today marks nearly two decades since The Sopranos last aired, with "Made In America" giving us the exact type of cliffhanger that David Chase loved to tease his audiences with.Whether you believe Tony was shot, died of a heart attack, or the cut to black was really just the end of the show, with the New Jersey mob boss living out the rest of his days a paranoid shell of his former, season one self, the rampant theorizing is part of what made the show a massive hit.TAKING A LOOK AT FOUR OF THE MOST OVERRATED EPISODES OF TELEVISION IN ENTERTAINMENT HISTORYIn that vein, here are five more fan theories from "The Sopranos" that make the show even more engaging on subsequent rewatches.Michael Imperioli and James Gandolfini appear in a scene from season 6 of The Sopranos, which aired from 1999 to 2007.(Barry Wetcher / HBO / Courtesy: Everett Collection.)As Tony's crew and friend circle starts to shrink as the show goes on, our panic attack-prone paisan becomes increasingly paranoid and scrambles to find a successor.Unfortunately, the best he can do is his drug addict "nephew," Christopher Moltisanti.JAMES GANDOLFINI'S SON BANNED FROM 'SOPRANOS' SET, WHICH DROVE HIM 'CRAZY'Tony does his best to groom Chrissy as his "hair apparent," but despite his best efforts, Moltisanti remains an unreliable junkie until season six, when he makes an earnest attempt to get clean.Towards the end of the season, Chris relapses and starts using again, leading to a car crash that leaves him maimed, giving Tony no other option but to whack his underling.But in the scene before the car crash, we see Tony and Chris at a meeting with Phil where the two are discussing business, and it's here where we are given clues that Chris may be a rat.‘SOPRANOS’ STAR LORRAINE BRACCO SAYS SHE'S LOOKING FOR LOVE IN HER 70SDuring the meeting, Chris is seen wearing a cap promoting his new movie, "Cleaver."Othe...