So here's a list of references I was able to find throughout the game to other media. Has anyone else noticed any others I may have missed?
•The Prancing Donkey= The Prancing Pony from LotR.
•"Morning! Nice day for fishing ain't it! Uh huh!" Said by the Fisherman in Greyport= Balin from Viva La Dirt League's Epic NPC Man series.
•Sam, his Dwarf Buddies & the Gemstone= A tragic parody of The Hobbit, with Sam sharing his name with Samwise Gamgee from LotR.
•Luthien= Her name is taken from Lúthien of the LotR.
•Master & Vampire Sisters= Dracula's Wives.
•Mia & Werewolf= Little Red Ridinghood.
•Grumpkins= Creatures mentioned as folklore & superstition in Game of Thrones.
•Jamie Linnister= Jamie Lannister from Game of Thrones.