Supernatural Season 8 Episode 11

Sam: Special Agent Taggart. This is my partner, Special Agent Rosewood.
Referencing the movie Beverly Hills Cop (1984) and its sequels. In the movie, the two Beverly Hills cops that Alex Foley befriends are John Taggart (John Ashton) and William Rosewood (Judge Reinhold).

Sam: Do you believe Dungeons & Dragons?
Referencing the best known of the tabletop role-playing games, first published in 1974 by TSR. The game lets players simulate fantasy archetypes like wizards, warriors, thieves, and clerics, using a variety of different-sided dice to resolve combat, spell-casting, and skill use. The game has gone through at least four iterations since its publication, spawned an industry of "RPGs," and been used as the source for several movies.

Warrior: I love you.
Charlie: I know.

Referencing the 1980 movie Star Wars V: The Empire Strikes Back. Leia says the same first line to Han as he prepares to undergo carbonite freezing. Han responds with the same words as Charlie.

Dean: This could be "Fifty Shades of Greyfox" for all we know.
Referencing the 2011 erotic novel Fifty Shades of Grey by E.L. James, the first in a trilogy of books. It features explicit scenes involving bondage and sadism, thus Dean's comment's when he sees the whip.

Charlie: Have fun storming the castle.
Referencing the same line from the 1987 movie The Princess Bride. Billy Crystal's character Miracle Max calls it to Inigo Montoya and Fezzik as they go off to storm the castle of Prince Humperdink and prevent his marriage to Princess Buttercp.

Charlie: It's good to be queen.
Referencing the 1981 comedy History of the World, Part 1. Louix XVI (Mel Brooks), says "It's good to be the king" three times, addressing the audience directly each time. Variations of it later appears in Brooks' productions Spaceballs, Robin Hood: Men in Tights, and the Broadway version of The Producers.