Yup, and the greatest cameo evah!
The scene in Ghostbusters where Harold Ramis is describing the abandoned fire station: "…the wiring is all substandard, it’s completely inadequate for our power needs…’
One more:
Pretty much any scene from Arthur that doesn’t involve Liza Minnelli.
“You’re a hooker! I just thought I was doing really well!”
*“Arthur, a real woman could make you stop drinking”
She’d have to be a pretty big woman!*
“You must have hated this moose…” “…tough room, I don’t have to tell you, though…”
The scene from Home Alone 2 when Macauley Culkin is lip synching along with the movie (was it “angels with dirty faces”?) and makes the bad guys think he’s a man with a gun.
Any monster-fighting/city-stomping scene from a Godzilla movie (or any other giant monster movie, really).
The ending of either Alien (Sigourney Weaver running around in her underwear) or Aliens (big fight between the Alien Queen and Ripley in the powerloader).
I’ll also watch pretty much any old, black & white movie I catch, regardless of what’s going on. Except for westerns and war movies.
Chicago, either When You’re Strokin’ Mama or Cell Block Tango
Jurassic Park, when they drive up and Sattler is wondering over the leaf and Grant tears off his sunglasses and then grabs the top of her head and turns it to the dinosaur.
I don’t know if it’s that sense of wonder or the music, but I always get chills.
Another vote for Field of Dreams…
Also, if I happen to be changing channels and A Few Good Men is on, I’ll watch. Even at 3 in the morning.
ANY scene in Velvet Goldmine. Mmmmmm…
I mentioned this in a thread a while ago, but that song has been stuck in my head for, like, a YEAR.
(Scotty doesn’t know that Fiona and me do it in my van every Sunday… she tells him she’s in church but she doesn’t go now she’s on her knees and SCOTTY DOESN’T KNOW!!!)
(sorry)
That scene in The Last of the Mohicans when Hawkeye orders Cora to, “Stay alive, at all costs! I will find you!”. That scene sends shivers up and down my spine.
Mommie Dearest. Truly awful movie, but I watch it every time it comes on.
Bringing Up Baby sends me into giggles every time I see it, so I’d stop and watch it at 3 in the morning.
It’s 3 am? Gawd! Why did I turn that stupid set on? John Wayne and Victor McClaglen are having a real donnybrook in The Quiet Man. That’ll keep me up for about fifteem minutes. I gotta stop turning that thing on when I get up to pee.
Any of the LOTR trilogy - I pretty much worship these movies , so anything from them has my attention indefinitely
Rocky Horror Picture Show - Frank coming down in the elevator , singing Sweet Transvestite
Jurassic Park Trilogy - ANY dino scene , but I particularly love the compys 
A Knight’s Tale - The jousting scenes . Yeah , baby !
The Black Stallion - OK , so it’s a kid’s movie… what of it ? I love the scenes at the beginning where Alec and The Black are playing on the beach . Such a beautiful animal !
Moving this from IMHO to Cafe Society.
Star Trek II : Enterprise , meet Reliant
Any scene in Pulp Fiction
Tipping scene or torture scene from Reservoir Dogs
Party scene of Dazed and Confused
Any scene in Requiem for a Dream, but especially when Marion is talking on the phone to Harry.
Pretty much anything from Monthy Python and the Holy Grail - especially the bit where they meet the French (“I fart in your general direction!” or in Castle Anthrax.
Arnold doing ballet in the opening scene of Pumping Iron.
The death scene in Amadeus. I’ve seen it upwards of twenty times and it still sends shivers up my spine.
The revenge montage that closes The Godfather. ("…Don Corleone.")
The bit in The Godfather II where Freddie’s fishing in the boat.
The opera scene in The Godfather III.
A couple of scenes from The Blues Brothers don’t get turned off at any hour of the day or night if I stumble across them:
The Aretha Franklin scene (and the street scene preceding it with John Lee Hooker, great stuff)- “Don’t you blaspheme in here! Don’t you blaspheme in here!!”
Ray’s Music Exchange - “2000 bucks and it’s yours. You can take it home with you. As a matter of fact, I’ll throw in the black keys for free.”
Any scene in Victor/Victoria with Lesley Anne Warren. My favorite is the scene where Julie Andrews sings “Le Jazz Hot” and then pulls off her wig. Lesley’s Norma goes from pissed off to ecstatic in three seconds flat.
Just about any scene in The Color Purple, but particularly the last one.
The Mask - the club scene where Jim Carrey ends up dancing with Cameron Diaz.