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Henry Winchester, Sam and Dean's grandfather, travels through time to the present to escape a demon seeking a box that he has taken. As Henry tries to find a way back while dealing with the demon, he tells the brothers about their true heritage.
Henry Winchester: I'm from Normal, IL. 1958.
Dean: Right. Seriously? Dude's time traveling through motel-room closets. That's what we've come to?
Henry Winchester: You're men of letters, correct?
Dean: I'm a little rusty on my boy bands. Men of what?
Henry Winchester: My father and his father before him were both men of letters. As John and you two should have been. We're preceptors, beholders, chroniclers of all that which man does not understand. We share our findings with a few trusted hunters--the very elite. They do the rest.
Dean: So you're like Yodas to our Jedis. (Henry stares blankly) Never mind. You'll get there.
Henry Winchester: Hand me your... walkie-talkie.
Sam: You mean my phone?
Henry Winchester: Even better. Operator, I need Delta 457.
Dean: Who are you not calling?
Henry Winchester: I'm sorry I judged you two so harshly for being Hunters. I should have known better.
Henry Winchester: You're also Winchesters. As long as we're alive, there's always hope.
Dean: You're not going anywhere, 007...
007 is the code number of author Ian Fleming's James Bond, the British secret agent with a "license to kill."
Dean: So you're like Yodas to our Jedis.
Yoda is the wise Jedi Knight in the two Star Wars trilogies, who typically speaks in obscure riddles and hints.
Punk Clerk: Carrie screening's on Sunday.
Carrie is one of Stephen King's first novels, about a girl with telekinetic powers who takes revenge on her sadistic classmates. It was made into a movie in 1976 and then remade in 2003.
Henry: It's from Casablanca.
In the 1942 movie Casablanca, Rick (Humphrey Bogart) plays opposite Ilse (Ingrid Bergman) in this story of World War II intrigue.
Henry: Your father saw Abbot and Costello Meet the Mummy at the drive-in one night.
Abbot and Costello Meet the Mummy (1955) is the last film that the team made for Universal, and has them in Egypt as a cult seeks them out for the medallion they've accidentally picked up.
Dean: I'm guessin' he's gonna whip up another of those blood spells and Marty McFly himself back to the 1960s.
Marty McFly is the main character in the three Back to the Future movies, a teenager who uses a time-traveling DeLorean to visit the past and future and alter his own history.