In Casino Royale (both the book and the movie), Bond orders a fairly unique martini while gambling and names it after the girl he's with. Just as much a reminder for me and information for you, here's the recipe:

3 measures gin
1 measure vodka
1/2 measure dry vermouth

Shake ingredients together, strain into a martini glass, and garnish with lemon peel.

They specify Gordon's gin, but I'm a Bombay Sapphire drinker so I'll probably stick to that. They also specify Kina Lillet, but that's been thought to be a little too bitter so Lillet vermouth should be used instead... but I'm not a vermouth connoisseur so I couldn't say on that.

There is a fantastic outline of James Bond drinks over at The James Bond Dossier and a great discussion specifically about the difference between shaking and stirring a martini at The Straight Dope. Interesting stuff.