The very first hoverboards that was shown was in the 1962
cartoon TV show "The Jetsons". They were used in episodes including
"A Date with Jet Screamer" "A visit from Grandpa" "Elroy's Mob"
Later on in Season 2 of the 1980s hoverboards were used in
"Elroy Meets Orbitty" Also they were used in the movie "Rockin'
with Judy Jetson" and "The Jetsons movie"
The hoverboard that really introduced people was a popular PG-13
teen movie "Back to the Future 2" in 1989 as well as the NES game
"Back to the Future II & III"
Also hoverboards were also used in Later TV shows and movies
such as "Reboot", "Johnny Quest", "Butt-Ugly Martians", "Teenage
Mutant Ninja Turtles: Fast Forward", "Treasure Planet", "Pinocchio
3000" and "Wreck it Ralph".
Hoverboards were even in video games like "Streak: Hoverboard
Racing PS1, Final Fantasy VIII, Trickstyle PC, Beam Breakers,
Eyetoy: Antigrav, Teenage Mutant Ninja Turtles 4 Turtles in Time
SNES and Battle Nexus GC and PS2, "Treasure Planet PS1 and PS2 and
Sonic Riders Zero gravity.
I hope that answered your question on Hoverboard
introduction.