Despite being a fan of the Bond films, I rarely drink vodka Martinis. I prefer the more traditional gin route. The Martinis I make at home are inspired by a recipe from Mr. Martini's excellent "Behind the Bar Show." Specifically...
0.5 oz dry vermouth (Noilly Prat, the original dry vermouth)
A splash of orange bitters
Shaken over ice, served in a chilled cocktail glass with a twist of lemon