scene selection

BACK TO THE FUTURE (1985)  - Terrorists locate and attempt to kill Doc, McFly makes sparks fly into fire in mall parking lot...mall parking lots are cool, fyi.  They're even cooler frozen in the 1980's.  ("If you want Pepsi, you gotta pay for it".)
BATMAN (1989) - Mirror.  MIRROR!  "You see what I have to work with here...."
  & "It's me.  Sugar bumps."
BEETLEJUICE (1988) - the Geffen logo w/ Danny Elfman's score slowly beginning...DRUM.DRUM...duDUduDUDUDU...
CASPER (1995) - Dan Aykroyd cameo.
CLOCKERS (1995) - Opening credits featuring a sad homage to the lives lost in the name of gangs.
GHOSTBUSTERS (1984) - I tried to think of the most harmless thing...you know what I mean...
THE GOLDEN CHILD (1986) - Sardo Numpspa (sp???) transforms into the beast that can only be defeated by the Ajante dagger.
JURASSIC PARK (1993) - The dude doing whatever the heck with the cages, then gets dragged into one of 'em by a vicious Velociraptor(sp???) [opening scene]
nowhere (1997) - theatrical trailer, found on VHS copies of David Cronenberg's CRASH (1996) and other New Line Cinema releases of the same time frame. You can request cultcine.com to include it with your order of nowhere (1997).

For movies full of one continuous flowing moodiness, I recommend BRINGING OUT THE DEAD (1999) and THE LAST UNICORN (1982).  For 80's nostalgia marathons, GHOSTBUSTERS, GHOSTBUSTERS II and SHORT CIRCUIT are musts (for me anyway).

BATMAN
BEETLEJUICE
BRINGING OUT THE DEAD
CLOCKERS
E.T.: THE EXTRA-TERRESTRIAL
GHOSTBUSTERS
GHOSTBUSTERS II
JURASSIC PARK
THE LAST UNICORN
NOWHERE
SHORT CIRCUIT

These I either own or will own (one day, I swear!) for their repeat-viewing-ability.  Most movies these days suck, the ones that don't are rare, and are usually great moments, but generally wear very quickly when replication of said moments is attempted.  I wouldn't mind buying them, but keeping them?  For what reason?
Those films are:

THE BEAVER
THE DARK KNIGHT TRILOGY
THE DEPARTED
(500) DAYS OF SUMMER
MYSTERIOUS SKIN
SHORT TERM 12
THE SPECTACULAR NOW
SUPER
and possible others, nothing else is coming to mind at the moment...