The following media in this list is from 1990.
Movies
Walt Disney
Home Video
The Little Mermaid (May 18)
Sing-Along Songs
Very Merry Christmas Songs
20th Century Fox
Theatrical
Home Video
Star Wars Episode IV: A New Hope
Star Wars Episode V: The Empire Strikes Back
Star Wars Episode VI: Return of the Jedi
Warner Bros.
Home Video
Other
Home Video
My Little Pony: The Movie (from Video Treasures)
PC Software
Microsoft
Television
NBC
The Goonies (February 18 and September 2)
Adventures of Super Mario Bros. 3 (September 8)
CBS
The Wizard of Oz (February 20)
The Wonderful Wizard of Oz: The Making of a Movie Classic (February 20)
ABC
PBS
The TV special 'Tis a Gift premiered on December 9.
Broadcast syndication
Super Mario Bros. Super Show
The Disney Channel
Star Wars Episode IV: A New Hope
Home video
Peanuts
He's Your Dog, Charlie Brown!
A Charlie Brown Christmas
Is This Goodbye, Charlie Brown?
It's an Adventure, Charlie Brown!
Be My Valentine, Charlie Brown
It's the Easter Beagle, Charlie Brown
She's a Good Skate, Charlie Brown
It's Flashbeagle, Charlie Brown
It's Magic, Charlie Brown
Charlie Brown's All-Stars
It's the Great Pumpkin, Charlie Brown
What a Nightmare, Charlie Brown
You're Not Elected, Charlie Brown
You're the Greatest, Charlie Brown
Life is a Circus, Charlie Brown
Play it Again, Charlie Brown
Someday You'll Find Her, Charlie Brown
It Was a Short Summer, Charlie Brown
It's Your First Kiss, Charlie Brown
Barney & the Backyard Gang
Dr. Seuss
The Grinch Grinches the Cat in the Hat
Kidsongs
A Day at Old MacDonald's Farm
I'd Like to Teach the World to Sing
Cars, Boats, Trains and Planes
Super Mario Bros. Super Show
Princess, I Shrunk the Marios
Thomas & Friends
Thomas Gets Tricked and Other Stories
James Learns a Lesson and Other Stories
Tenders and Turntables and Other Stories
Thomas Breaks the Rules and Other Stories
Video Games
Mario
Super Mario Bros. + Duck Hunt + World Class Track Meet
Super Mario Bros. 3 (February 12)
Super Mario World (Japan only)
Music
Home Alone: Original Motion Picture Soundtrack (December 4)
Logos of 1990
Film
Television
Columbia Pictures Television
National Captioning Institute
Home video
RCA-Columbia Pictures Home Video
RCA/Columbia Pictures International Video
Together Again Video Productions
The Britt Allcroft Company
Video gaming
Nintendo Entertainment System
Currency of 1990