Lynda Carter – Principal Powers (Sky High)
Calling Lynda Carter’s role in Sky High a cameo is honestly a bit of a reach, but she does make a pretty funny reference at one point to her years leading the Wonder Woman TV show in the late 1970s. Not to mention, she does get less screen time in the 2005 Disney flick as Principal Powers, head of the titular school for young superheroes in training, than her co-star Bruce Campbell, who essentially made his superhero character debut as Coach Boomer (a.k.a., Sonic Boom) despite a few earlier, small comic book movie appearances.