I have 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.
Valentin. Freeing Bond from a torture device. With one bullet. While mortally wounded.
Even better: "I'm looking for a submarine. It's big and black and the driver is a good friend of mine."
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)
—Desmond Llewelyn as Q's final lines before Desmond died in a tragic car accident. R.I.P.
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. Always loved that moment.
M manipulating Elektra so give her access to a clock with batteries, which is promptly used to Mac Guyver a GPS signal once the guards are out of sight, making it possible for MI6 to dispatch James Bond.