By Daniel Chavkin The NBC show had some fun with Eli and Peyton Manning on its latest episode. Saturday Night Live doesn’t quite move the needle as much as it used to, but every once in a while, the venerable NBC comedy showcase produces a skit that goes viral. That happened during the show’s season premiere this week, when it opened with a parody of ESPN’s ManningCast. With guest host Miles Teller playing Peyton Manning and Andrew Dismukes playing Eli, SNL poked fun at the Mannings and itself by presenting an alternate telecast of a skit as the cold open. It mainly served as a vehicle for the…