This film was the last appereance of Desmond Llewelyn's Q, and he went out with a high note.
Q: I've always tried to teach you two things: first, never let them see you bleed.
Bond: And the second?
Q: Always have an escape plan. (is lowered into the floor)
Just when you think Bond's been rumbled...
Christmas Jones:(in Russian) You speak English very well for a Russian. Bond(in Russian) I studied at Oxford.
This might double as a Continuity Nod; Book!Bond studied Oriental Languages at Oxford.
One has to give credit to Dr. Christmas Jones for being able to disarm a nuclear bomb while travelling at high speed in a pipeline inspection rig. Even though the bomb was never nuclear, she didn't know that when she volunteered.
Christmas is actually a pretty adequate character who suffers far more from being played by a terrible actress—she never waits for Bond to rescue her in the nuclear site and rigs a mechanism herself, and mostly holds her own during the action sequences. Not once does she turn into any kind of dimwitted Screaming Woman.
M, who'd earlier expressed guilt for advising Elektra's father to not pay for her ransom when she'd been kidnapped, slapping Elektra across the face upon the reveal of her true colors.
M manipulating Elektra so give her access to a clock with batteries, which is promptly used to MacGyver a GPS signal once the guards are out of sight, making it possible for MI-6 to dispatch James Bond.
Valentin Zukovsky freeing Bond from a torture device. With one bullet. While mortally wounded. Even better, his entrance to that scene:
Zukovsky: I'm looking for a submarine. It's big and black and the driver is a good friend of mine.
Renard's first scene. He's clearly a master of the Blofeld Ploy.
Renard's escape from the test site - Bond shoots at him, but is foiled by the bulletproof glass. Renard's nonchalance sells it.
"No hard feelings, Mister Bond, but we're even. Soon, you'll feel nothing at all".
The elevator goes up as Renard points down to a bomb that's just started ticking.
Probably the best use of the catchprase ever:
Christmas: "So you're a British spy. Do you have a name?"
Bond: "The name's Bond. (Elevator shoots upwards). James Bond".
Bond allowing the bomb in the pipeline to detonate and let Elektra think she's won.
Bond taking down a helicopter with some flammable gas and a flaregun.
Bond's final confrontation with Elektra, who he demands call off Renard from triggering the nuclear attack. He has her cornered with nowhere to go, but she remains confident that Bond, now visibly impatient, cannot bring himself to kill her. Thus, this exchange.