Professor Proton's "Force ghost" appearance is based on Obi-Wan Kenobi in Star Wars Episodes 5 and 6. However, his lightsaber hilt is the one that Obi-Wan uses in Episodes 1 and 2, as opposed to the rusted version seen in Episode 4.
That being said, Force ghosts don't typically carry lightsabers.
Amy: Do you want me to go to the funeral with you?
Sheldon: Oh, I'm not going to the funeral.
Amy: Why not?
Sheldon: All those people blowing their noses? Can't tell the sick from the sad. I will be at home celebrating Star Wars day as planned.
Amy: Are you sure you don't wanna go and say goodbye?
Sheldon: Amy, mourning the inevitable is a complete waste of time.
Amy: And watching a bunch of goofy space movies you've seen hundred of times isn't?
Sheldon: If we were in a physical relationship, you just lost sex tonight.
Bernadette: ..and even though we had missed the movie, we could still be a part of the fun!
Howard: Oh, you didn't miss anything, we just started over.
Bernadette: Son of a Bitch!
Sheldon: (While Leonard hugs him) Your heart might be in the right place, but your head, chest, and arms certainly are not.
Leonard: I do not cry.
Penny: Toy Story 3?
Leonard: The toys were holding hands in a furnace!
Original International Airdates:
Norway: May 6, 2014 on TVNorge
Finland: March 12, 2015 on Sub
This episode was created with help from Lucasfim.
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