Super 8
Love Comes Softly
The Hollow
Lights Out
The Big Red One.
If you think long & hard ;), then just about any name of any movie seems suspicious. Sometimes for several competing reasons.
Three men and a little lady
James Bond (or Bondage) would be a great name for an S & M film star.
That one wasn’t an accident. They knew exactly what they were doing. 
Let’s never forget the classic,
Earth Girls Are Easy (1988)
Star Wars
On Golden Pond
Toy Story
Truly Madly Deeply
Little Women
The Great Dictator
Nice. I’m depraved enough to get this one, but…
?
Yeah, porn stars. Measuring the size of their… accomplishments. 
And so on.
I keep thinking the name of that George C. Scott film about him tracking down his porno daughter is called the afore-mentioned Super 8. But it’s Hardcore. A little spot on.
Going down the list of his films we find: The Whipping Boy, Brute Force, Descending Angel, The Rescuers Down Under, Pals, Choices, Crossed Swords, Beauty and the Beast, The Savage Is Loose, Bank Shot, Oklahoma Crude, They Might Be Giants, This Savage Land, The Flim-Flam Man, Not with My Wife, You Don’t!, The Hustler.
Quite a few sound like gay porn.
Plus appearances in the TV series Naked City and Golden Showcase.
Blow
Hancock
I am Number Four
The Professional
The Amateur
The Natural
Pretty in Pink
Toy Story
Up!
All of the “Oh God” titles
(The concept of an aging George Burns in a porn flick…) 
Just about every one-word-titled movie ever, regardless of what the word is, since there’s built-in ambiguity:
Gandhi
Chicago
etc
and
The Passion of the Christ (which arguably already was and might not need to be remade)
The Third Man
Picnic at Hanging Rock
Point Blank
Snow White and the Seven Dwarfs
Steamboat Willie
Harry Potter and the Chamber of Secrets
Driving Miss Daisy
Spaceballs
Westward Ho
Blow Up
Dangerous When Wet
Dirty Dancing
These were designed to be titillating (heh) titles, so they may not count:
Can I Do It…'Til I Need Glasses?
If You Don’t Stop It…You’ll Go Blind!
Wet Hot American Summer
Going down Marilyn Monroe’s IMDb list (some are duplicates):
Something’s Got to Give
The Misfits
Let’s Make Love
Some Like It Hot
The Seven Year Itch
Gentlemen Prefer Blondes
Monkey Business
Don’t Bother to Knock
We’re Not Married!
Clash by Night
Let’s Make It Legal
Love Nest
As Young as You Feel
All About Eve
The Fireball
Love Happy
Ladies of the Chorus
Scudda Hoo! Scudda Hay! (???)
You Were Meant for Me
Dangerous Years
The sex scenes in Van Lustbadder’s “The Ninja” would have been tough to depict on the big screen. As it happens, the movie version was campy as hell.
Changed to “Vaiana” in Europe due to the name already having been taken by… well, you all can probably guess.
All five of the Beatles’ movies:
A Hard Day’s Night
Help!
Magical Mystery Tour
Yellow Submarine
Let It Be