Count me in for:
Back to the Future
In fact, I love most of the 80's movies.
"It's some kind of magic", quoted from Highlander.
There is something in those films, it's the atmosphere, the photography, the acting... If you look at the 80's horror movies, you can see the difference from today's horror movies.
So the best are:
Back to the Future
E.T.
Highlander
A Nightmare on Elm's Street
Hellraiser
Mad Max
and...
STAR WARS, Episode V, The Empire Strike Back (1980)
STAR WARS, Episode VI, Return of the Jedi (1983)
I also add Star Wars, Episode IV, A New Hope, although it's in 1977...just cuz Star Wars rules
So, that's a short list, there is many many more, but I don't want to spend the night on it
Cheers!