RolloT constantly brings up Lost, having a field day when they fought The Smoke Monsters/Clones.
Rollo has also compared the party to Dethklok, since they do epic stuff in battle but get flummoxed by mundane things like doors and rivers. Taken a step further with the campaign being nicknamed "Dethklok" (the actual name is simply "The Morgana Campaign").
The Vane family has a badger companion named Trogdor.
And Juliet has Pidgeotto.
The basic plot of the game is effectively identical to The Dresden Files novel Dead Beat: The Big Bad is an evil magic-user who wants to become a god, and in order to achieve this goal is seeking out a powerful grimore written by a legendary necromancer. The Tome of Eldritch Lore in both stories even share a name, the only difference being the author's name ("The Word of Morgana/Kemmler"). Other than that, though, Spoony's story really has nothing in common with Jim Butcher's.
Juliet's bear companion is called Pascoe after current New York Giants fullback Bear Pascoe.
When stopped dead by yet another door, the guys declare it "God-Door", which Nik sings in the manner of "Trodgor"