In the superhero universe Tony Stark is Iron Man.  Played by Robert Downey, Jr. in the eponymous movies and the Avengers movies, Tony Stark combines technological genius with style and a devil may care attitude. The Stark cocktail has nothing to do with Iron Man, at least not that I've found. I discovered it on the Cocktail Detour site. Fortunately you don't need to be a genius to make it.

1.5 ounces bourbon
.75 ounces yellow Chartreuse
.5 ounces honey syrup
Juice from 1/4 lemon
Angostura bitters

Combine everything except the bitters in a shaker, shake like you're Iron Man hurtling through the sky (or you're competing in an Ironman triathlon), strain into a chilled glass, and add the bitters on top.

The Stark is a nice combination of boozy, sweet, and sour tastes.  The bourbon brings the booze, the yellow Chartreuse (which you'll see in drinks such as the Naked and Famous and the Renegade) brings the booze and a little bit of sweet, the honey syrup (which you'll see in drinks such as the Mexicillin and A Thief In The Night) adds a little more sweet, and the fresh lemon juice (you are using fresh juice, right?) brings just enough sour.

Even though I am not a big fan of comic book movies (Ms. Cocktail Den is), I do like many of them.  Similarly, even though Iron Man is not my favorite Avenger (Captain America is, see the Whiskey Smash), I do like his character. Like its unintended namesake, the Stark is a combination of cocktail genius, style, and attitude.