**Some Kind of Wonderful
Halloween
Top Gun**
plus all that have already been listed.
i almost forgot…
Tango and Cash
Most of John Hughes’ work in the mid 80’s, Labyrinth fer sure (Jennifer Connelly at 15, yum!), definitely Raising Arizona. And I agree with lots of other choices from the previous posts. I worked in a video store in the 80’s so I watched a lot of movies.
Better Off Dead
The Adventures Of Buckaroo Banzai Across The Eighth Dimension
Randall? Is that you?
21 posts and no mention of Risky Business???
This Is Spinal Tap
I think Fletch would give it a run for the money in the most-quoted department.
Ah, the early 80s…back when Chevy Chase was actually funny…
Fast Times at Ridgemont High
Thank you, thank you, THANK YOU Phoebe Cates…
Thanks for the mention of Last Dragon, monstro. As you know, for all its cheese, that has to be one of the most quotable movies of all time.
Other thus-far unmentioned '80s gems:
I’m Gonna Get You, Sucka
Last American Virgin
Lethal Weapon (c’mon, guys!)
Trading Places
48 Hours
Eddie Murphy’s Raw
Amazon Women on the Moon
Hollywood Shuffle
Midnight Madness squeaks in with a 1980 release.
Bachelor Party
Splash
Bad Boys (with Sean Penn and Esai Morales)
NoClueBoy, Halloween was released in 1978.
From the IMDB’s list of the top movies of the 80’s, my top 10:
1 Raiders of the Lost Ark (1981) 8.6/10 (60941 votes)
2 Star Wars: Episode V - The Empire Strikes Back (1980) 8.6/10 (71352 votes)
3 Boot, Das (1981) 8.4/10 (18093 votes)
6 Amadeus (1984) 8.2/10 (24487 votes)
8 Blade Runner (1982) 8.1/10 (51774 votes)
9 Aliens (1986) 8.1/10 (42512 votes)
11 Princess Bride, The (1987) 8.1/10 (36587 votes)
17 Star Wars: Episode VI - Return of the Jedi (1983) 8.0/10 (55203 votes)
20 Henry V (1989) 7.9/10 (6052 votes)
33 Terminator, The (1984) 7.8/10 (36815 votes)
Yeah, but I didn’t see it until the 80s.
Cocktail
Don’t Tell Mom the Babysitter’s Dead
National Lampoon (various and sundry)
Sixteen Candles
Rain Man
A Christmas Story
The Pope of Greenwich Village
Oops, sorry all – I left some biggies off my list:
Johnny Dangerously
Mr. Mom
Soul Man
Enemy Mine
Bull Durham
Full Metal Jacket
Easy Money
Back to School
My Favorite Year and The Stunt Man are two of my favorites.
Indiana Jones and the Temple of Doom Great, awesome, wonderful. Action, adventure, sci-fi, comedy, it had it all.
Big Trouble in Little China Same reasons 
For a while I loved The Breakfast Club until I got older and intellectually disagreed with many of the points it made, or suggested, but entertainment wise, it was pretty good.
Indiana Jones and the Temple of Doom Great, awesome, wonderful. Action, adventure, sci-fi, comedy, it had it all.
Big Trouble in Little China Same reasons
For a while I loved The Breakfast Club until I got older and intellectually disagreed with many of the points it made, or suggested, but entertainment wise, it was pretty good.
Oh yeah, The Stunt Man. I coulda sworn it was '78 or '79… it’s 1980 and one of the best films ever