Sweet and sour all in one.  The bartender at Absinthe Brasserie and Grill in San Francisco served this up last year and I was smitten.

2 oz Gin
1 oz Grapefruit juice
2-3 dashes Maraschino liqueur

Pour above Gin, Liqueur and Grapefruit juice into a cocktail shaker full of ice
Shake vigorously
Strain into a cocktail glass
Add Lime wedge for garnish

Courtesy of Absinthe Brasserie and Grill