When Gareth Edwards wrote "Rogue One," he put Rian Johnson in front of the camera for a special cameo. Now, Rian is returning the favor in "The Last Jedi." If you can remember to do so during the film's heart-pounding climax on the salt planet of Crait, look for Edwards as a Resistance soldier fighting in the trenches. 

As hardcore Warwick Davis, who famously played Wicket the Ewok in "Return of the Jedi," has made cameos in "Star Wars" movies ever since. Here, he voices one of the rich, greedy creatures gambling their ill-gotten gains away on Canto Bight. 

Joseph Gordon-Levitt has a long history with Rian Johnson, starring in his 2005 debut film "Brick" and his nail-biting sci-fi film "Looper." He also has a voice cameo as one of the gamblers on Canto Bight. 

Another star of "Brick," Noah Segan, also has a long-standing relationship with Rian Johnson. He appears in this film as an X-Wing pilot who fights in the opening battle against a Dreadnought Star Destroyer.

Very mild spoiler here: As part of a mission, Finn and Rose are instructed to go to Canto Bight and search for someone wearing a floral pin. That pin is worn by a craps-throwing Canto Bight gambler played by Justin Theroux, star of HBO's "The Leftovers" and writer for films like "Tropic Thunder" and "Iron Man 2." 

It might become a new tradition to have big stars play Stormtroopers in these new Star Wars movies. Daniel Craig played one in "The Force Awakens," and here, Tom Hardy plays one in a scene where Finn and Rose disguise themselves as First Order officers to sneak onto Supreme Leader Snoke's mothership. But he's not the only famous Stormtrooper in that scene...

The future King of England, Prince William, and his brother, Prince Harry, also play Stormtroopers on Snoke's ship. Like Hardy, you probably won't be able to spot them, but they also got a "Star Wars" moment of their own this week, when BB-8 bowed to them as they arrived at the film's London premiere.