Boba Fett's First Appearance - Star Wars Holiday Special - November 17, 1978

Nov 17th also marks the debut of mysterious Bounty Hunter Boba Fett - in animated form and
riding a dinosaur no less. The only part of the Holiday Special actually remembered fondly by fans.
(It's also now included as an Easter Egg on the Blu-Rays)

I remember loving the funky exaggerated Heavy Metal style of the animation...
...it really stuck with me and I still find it cool.

Here's a funny cartoon I found about the dinosaur riding @Blue Milk Special

And lastly the TV Guide Ad for the Star Filled Special.