Plenty O'Toole having dinner with Bond, ending with Plenty inviting herself to Bond's apartment, where she struts her stuff once she's been stripped down to her bare essentials... only to have a Naked Freak-Out when the "pervert's convention" throws her out the window.
After being thrown out the window Plenty returns to Bond's apartment soaking wet and wearing nothing but a white Modesty Towel to hide her shame in the hopes of retrieving her clothes and to see what has become of Bond. After seeing him having sex with Tiffany an angry Plenty almost leaves... but not before going through Tiffany's purse and finding her address. It doesn't work out well for her...
It was also this for classic Bond, since Sean Connery only agreed to one additional movie with UA boss David Picker, and, minus McClory's Never Say Never Again, refused to deal with any part of the franchise ever again note or at least until the 2005 From Russia with Love video game, which bridged the gap between Pierce Brosnan and Daniel Craig. EON had to recast the role for the third time in a row, going with Roger Moore, who was considered originally.
Executive Meddling: When the film aired on ABC the network had the scene where Lana Wood, as Plenty O'Toole, walked around wearing nothing but a flimsy pair of see through pink panties artificially altered to make it appear as though she were wearing a black bra with black panties - despite the fact that her backless purple satin dress clearly showed that she had no bra.
Fatal Method Acting: Closely averted by Lana Wood when the cement block she was tied to in the swimming pool slipped down the sloping floor of the pool and dragged her underneath. Fortunately crew members spotted and rescued her.
Meta Casting: Leonard Barr (Shady Tree) was a stand up comic in real life.
Money, Dear Boy: Sean Connery received $1,250,000 but used it to set up a charity to help poorer families in Scotland with their education costs.
Old Shame: Defied, at least as far as Jill St. John is concerned. In the "Bond Girls Are Forever" TV special, she has a few fairly scornful things to say about actresses who view their Bond Girl roles this way.
The Other Darrin: Blofeld (which makes him get hair this time), Leiter (the fourth actor to portray him!) and Bond himself.
Scully Box: Lana Wood needed one when on screen with Sean Connery. Except of course, in the scenes where she was lacking her clothes, for which she was given extra high heels to wear in order to compensate for the height difference, as a body double would not have worked for obvious reasons.
Technology Marches On: The codes that control the satellite are stored on a tape cassette that protrudes prominently in Tiffany's bikini bottom. Today, a flash drive would've been more discrete, though there'd still be the communication SNAFU between Bond and Tiffany
In Richard Maibaum's original screenplay, the villain was not Blofeld, but Auric Goldfinger's vengeful twin brother, to also be played by Gert Frobe. This was scrapped when Tom Mankiewicz was brought in for rewrites.
You Look Familiar: Charles Gray (Blofeld) earlier played a British agent in You Only Live Twice. Ironically, said agent is murdered by SPECTRE, so he is basically playing the man ultimately responsible for his own death.