Martini purists might dispute that this cocktail is properly called a martini. For example, Neatorama commenter nihil once wrote:
Dear Interwebs/Chain Restaurants/Peeps who love booze,
Stop calling every cocktail you make up a "martini." True martinis are a very small group of drinks and do not include things like chocolate, apple schnapps, or fruit. Also, serving a cocktail in a martini glass doesn't make it a martini any more than putting an elephant in a lake makes it a fish.
I won't dispute this argument. But I would definitely try Brown Sugar's delicious-looking cocktail made of vodka, peanut butter syrup, hot fudge and peanut butter cups.