Tonight, it is the boulevardier.

Two parts bourbon (Four Roses Small Batch)
One part Campari
One part sweet vermouth (Carpano Antica Formula)
Stir over ice, strain into an old fashioned glass, garnish with a twist of lemon. And tonight, a twist of orange. Just for fun.

But Doctor, isn't that just a Negroni with bourbon substituted for gin and slightly different proportions so it comes out a little more sweet, a little more spicy, a little less herbal and a little more strong?