C-3PO appeared in the attraction's queue with R2-D2 working on fixing a Starspeeder as well as appearing in the in-cabin load and unload spiels.
Star Tours: The Adventures Continue
C-3PO appears in the attraction as the accidental pilot of the attraction in addition to appearing in the queue like the original attraction. When doing some routine checkups on a Starspeeder 1000, he is locked in the pilot's seat and is forced to take control of the vehicle, escape Imperial forces after a Rebel Spy on board and get said spy to safety.
C-3PO appears along with R2-D2, Luke Skywalker (and Mark Hamill) and Chewbacca in an episode of The Muppet Show.
C-3PO makes a guest appearance with R2-D2 in "scavANTger hunt". Daniels did not reprise his role, and Artoo did not have the proper sound effects. Threepio claims to know street slang, and tells the main characters to "Step off, fools".
For more pictures and screenshots of C-3PO, click here.