Mulder compares his and Deep Throat’s relationship to the one between Luke Skywalker and Obi-Wan Kenobi. When Mulder gets angry once, he tells him to cut off the Obi-Wan Kenobi crap.
In "Small Pototoes", Amanda Nelligan is a huge fan who has seen the films countless times and is convinced that Luke Skywalker is the father of her baby girl. She hums the theme, and Scully asks whether Luke brought his light-sabre.
In "Vienen" after Doggett explains how five years ago, Mulder and Scully investigated the black oil substance that somehow curved into an alien colonization theory:
Mulder: And you’d like to help, but you left your light-sabre at home.
The guys on The Big Bang Theory are big sci-fi geeky nerds, and references the franchise quite often.
This strip edits Garfield's dialogue to be speaking in Yoda syntax.
This one does the same as the above, and also reverses the panels so it appears Garfield is using the force on Jon.
This strip contributes to the "I declare this house property of the X empire" Running Gag using the Galactic Empire.
This one edits a Garfield strip where Garfield declares he is absolutely not getting out of bed today, only for Jon to tell him there's a spider on his bed and him to jolt out immediately. His old response of "I keep forgetting we live in a generation without absolutes" is changed to "I keep forgetting only a sith deals in absolutes". As a bonus, the strip is titled "Don't Make Me Kill You".