An odd outcome for “The Theme from Unchained”, but you’re right.
Lark cigarettes used this theme for their TV commercials (have a Lark, have a Lark, have a Lark today). The last commercial had a Lark cigarette smoker being tapped on the shoulder by the Loan Ranger, asking him what gave him the right to use this song. Then someone taps the Loan Ranger on the shoulder, he turns around to face William Tell saying “I’m asking you the same question.”
Billy Vera’s “At This Moment” is always identified with Alex & Ellen on “Family Ties,” and Green Day’s “Good Riddance” with Seinfeld.
Huh. I hear “At This Moment” and I think Blind Date, that execrable Bruce Willis-Kim Basinger flick.
When I hear O Fortuna, I think of Excalibur, which I suppose is fortunate considering it’s been used in about a quadrillion movies, TV shows, and promotional campaigns before and since. It’s probably in the top three of cliched musical cues along with Also Sprach Zaruthustra and Ode to Joy.
Pachelbel’s Canon in D makes me think of Ordinary People (and GE soft white light bulbs, but that’s off topic).
I find it kind of funny, I find it kind of sad that Gary Jules’s cover of Mad World is inextricable from Donnie Darko.
Little Green Bag is also stuck with Reservoir Dogs.
Lust for Life makes me think of Trainspotting (but also cruise ships).
I can’t hear Only You without wondering how many languages it’s going to be sung in (So I Married an Axe Murderer).
And you can’t listen to Soul Bossa Nova without thinking of another Mike Myers movie.
Me too. Just last week that song came on the radio, and I started doing the over-enthusiastic cowbell banging motions Well Ferrell did in that skit. My husband (who had never seen it) looked at me like I was nuts. 
Another one for me is Inagodadavida (or however you spell it) from Manhunter.
Also, there are a number of classical/opera tunes that will always, always make me think of Bugs Bunny. (Kill the wabbit! Kill the wabbit!)
How about I Say A Little Prayer For You being corrupted by My Best Friend’s Wedding?
Tubular bells - The Exorcist (and to a lesser extent AT&T).
Inna Gadda Da Vida - Manhunter, as the killer goes after the blind woman in his house.
We Have All the Time In The World - On Her Majesty’s Secret Service, as Bond’s wife is killed just after their wedding ceremony.
I can’t hear the 12 Days of Christmas without thinking of John Denver and the Muppets BA-DA-BUMP-BUMP
When I hear any Journey song, I picture Rodney Dangerfield hitting the play button on his golf bag and dancing.
Adagio for Strings -> Lorenzo’s Oil
Everybody’s Gotta Learn Sometimes [Beck cover] -> Eternal Sunshine of the Spotless Mind
Hip to Be Square -> American Psycho
Relax -> Zoolander
Walking on Sunshine -> Futurama (I know it’s a TV show)
This one won’t be popular on this board, but I don’t think I’ll ever again be able to hear “All Along the Watchtower” without thinking of secret Cylons awakening.
I haven’t even seen this movie, but I have a vague idea what happens in the film, and every time I hear this song I want to throw up.
On a lighter note, Cyndi Lauper’s ‘‘Time After Time’’ immediately brings me back to the goofy slow dancing scene in Romy and Michelle’s High School Reunion. God I love that movie.
*Surfin’ Bird *by the Trashmen. If you’ve every seen Pink Flamingos then that song will bring back images one of the most bizarre scenes every set to music.
In the Garden of Eden honey.
[Rev. Lovejoy voice] Isn’t that rock and or roll?[/RLJ]
I never even saw the movie, but the trailer for it was played so many times, I still think of the movie when I hear the song, so strong was the association.
Dude, I totally agree with you. The moment the song came on in “Watchmen,” I turned to my BSG-loving friends and said, “Great, masked heroes are now Cylons, wonderful.”
Right beside you on Ferrell. Madsen made “Middle” for me, though. Before that the song was just a song. I can even see Mike dancing around whenever I hear it.
Amen! Chill Bump City. Best irony in movies.
For my money, every selection in Pulp Fiction began with Pulp Fiction, especially Miserlou. Tarantino ranks near the very top of the list of folks who pick the right music for their movies.
My contribution has to be Sinatra’s The Summer Wind and The Pope of Greenwich Village back when Mickey Rourke had a face, and Eric Roberts had all his thumbs.