“There go the piano lessions!” from Mystery Science Theatre 3000 The Movie. Used whenever someone gets a bump to any part of the body, not just the head…
“There is no spoon.” From The Matrix, when we are attempting to do something that on the surface looks impossible but you know the impossibility is just an illusion.
“Oh, we’re in a tight spot!” From O Brother Where Art Thou, used on an almost daily basis.
“You know, you’re starting to look like The Devil”. From TV - Everybody Loves Raymond - when looking directly into your SO’s eyes while saying something important/angry/serious, and there you are trying to make eye contact to get your point across and there he is puncturing your balloon of seriousness.
A friend of mine routinely greets me (and a lot of others) by extending his hand for a handshake and saying “Eric Stratford, Rush Chairman. Damn glad to meet you.” (Animal House)
I usually return the handshake with “Artie Fufkin, Polymer Records. Hiiiiii.” (This Is Spinal Tap)
Also, I’m not sure if there’s ever a day that goes by in which I don’t at some point intone “Yeeaaah. Yeeaaaah.” a la Bill Lumbergh (Office Space).
“What fresh hell is this?” Bette Davis (I think), don’t know the movie: whenever the phone rings.
“But ya aaaah, Blanche! Ya ah in that chair!” Bette Davis, Whatever Happened to Baby Jane. I use the appropriate word for the situation, i.e., “I’d buy that if I wasn’t so broke”. “But ya ahhhhh, Jim; ya ahhhh broke”
“Fasten your seatbelts; it’s gonna be a bumpy night.” Bette Davis (I’m seeing a trend), All About Eve
“Ged outd”. Ahnold in probably every movie. I drop off my wife at the bus stop: “Ged outd”, in my best Arnie monotone. She always laughs, bless her heart.
“Why do you say these things to me when you know I will kill you for it?” Zod to Lex Luthor in one of the Superman movies. I used to say this to my kids when they were young. Actually, I still do.
When I get together with my four children, it’s nearly all quotes, all the time. We usually end up going through the entire Enter The Dragon dialogue before it’s over.
“Christ, they sent me a moron!” Scent of a Woman. I rarely say this, often think it.
“So I’ve got that going for me.” Caddy Shack. Usually someone will reply “Which is nice.”
That is supposedly what Dorothy Parker said when her phone rang. You may be thinking of Bette’s “Fasten your seat belts–it’s going to be a bumpy night” from All About Eve.