Quite a few lines of Gustav Graves' dialogue are rather funny, notably:
Graves: [to Bond] Oh look! Parachutes for the both of us! [He throws one out of the plane window] Whoops! Not any more!
And:
Graves: You see, Mr. Bond, you can't kill my dreams. But my dreams can kill you.
Colonel Moon is introduced pummeling a normal-looking punching bag. The bag is unzipped, and a horribly battered man falls out. Moon says, "Get me a new anger management therapist."
When Q first uncloaks Bond's Aston Martin, Bond knocks on the roof of the car a couple of times just to make sure it's real.