-The robotic scanning device that popped out of the rock face resembled the gatekeeper droid for Jabba the Hutt's palace in Star Wars: Episode VI - Return of the Jedi (1983).
-Buzz's traveling through the tunnel in Zurg's fortress and it closing behind him upon entering, spiked wall trap aside, was taken from Star Wars: Episode V - The Empire Strikes Back (1980).
-Zurg's line of "So, we meet again, Buzz Lightyear, for the last time!" is a near-paraphrase of what Darth Vader said to Obi-Wan Kenobi shortly before dueling him in Star Wars: Episode IV - A New Hope (1977). This also occurred during the encounter with the Zurg toy in the elevator shaft of Al's apartment in the real world.
