There are just too many wonderful movies from the 1980's...
Here is a list, trying not to duplicate answers from above.
Big Trouble in Little China
Raiders of the Lost Ark
Indiana Jones and the Temple of Doom
Indiana Jones and the Last Crusade
Batman (1989)
Beverly Hills Cop
Labyrinth
Escape from New York
The Shining
Excalibur
Conan the Barbarian
Conan the Destroyer
Red Sonja
Rambo: First Blood
The Beast Master
Legend
The Evil Dead
Evil Dead 2
Army of Darkness
Gremlins
Beetlejuice
Ghostbusters
Airplane!
Airplane 2: The Sequel
Top Secret!
Real Genius
48 Hrs.
Crocodile Dundee
Ferris Bueller's Day Off
Risky Business
The Karate Kid
Top Gun
Tango & Cash
Who Framed Roger Rabbit
Akira
Clue
Coming to America
Friday the 13th
Dead Poets Society
When Harry Met Sally
Caddyshack
Trading Places
Dirty Rotten Scoundrels
Stand By Me
Highlander
Spaceballs
The Adventures of Buckaroo Banzai
The Last Starfighter
Bill and Ted's Excellent Adventure
Tron
The Lost Boys
Stripes
Field of Dreams
The Naked Gun
Bull Durham
Time Bandits
War Games
A Fish Called Wanda
John Woo's The Killer
Lethal Weapon
The Blues Brothers
Robocop
A Christmas Story
The Secret of My Success
Iron Eagle
Back to School
Fletch
The Untouchables
Young Sherlock Holmes
Howard the Duck
Remo Williams: The Adventure Begins
Twins
The Great Outdoors
Uncle Buck
Silverado
Heartbreak Ridge
Aliens
Weird Science
A Nightmare on Elm Street
The Big Chill
Spies Like Us
This is not a complete list...