The Ray Long Cocktail, an elegant, absinthe-tinted brandy Manhattan: Cognac, sweet vermouth, absinthe, and Angostura bitters. If you want to put a spin on the original, this is the way to go.
There are many versions of the Creole Cocktail. My favorite looks a lot like a Sazerac: whiskey, curaçao, and bitters, with a fragrant nose of absinthe.
Fino sherry, bianco vermouth, and orange bitters: the classic, light, aperitif Bamboo Cocktail, from the 1880s.
Rye whiskey, sweet vermouth, Benedictine and bitters make up this Manhattan variant's tribute to the Triple Crown: the Preakness Cocktail.
The Black Manhattan: bourbon, Averna, and Angostura bitters. Another variant of one of the greatest of the classic cocktails.