Many of Saturday Night Live's biggest stars turned out for Sunday night's 40th anniversary special. Chevy Chase, Billy Crystal, Dan Aykroyd, Mike Myers, Dana Carvey, David Spade, Adam Sandler, Chris Rock, Eddie Murphy, Tina Fey, Amy Poehler, Jimmy Fallon and Seth Meyers were all spotted at the celebration. But there was one still-living SNL star who couldn't attend: Tracy Morgan.