John Carpenter, master of horror movies (and legendary 80's soundtracks) pulled off an incredible sci-fi event in real life that nobody ever talks about.
In the mid 1980s, he built a real, working time machine, traveled 50 years into the future, and teleported a geriatric Adam Sandler into 1985 (who was a teenager at the time), and created a music video with Adam on keyboard / vocals to document the experience:
https://www.youtube.com/watch?v=D03E9kUTTtQ
Sadly the song recorded received such negative criticism, that the bad press overshadowed the invention of the time machine and Carpenter was never credited.