The Savoy Cocktail book has probably the finest range of cocktails ever produced. The bloodhound is a great cocktail and i would recommend it to everyone this summer.
Sticking with the seasonal and fruit cocktails i would also like to recommend the Summer Gin Punch
2 PARTS London Dry Gin
1/2 PART Maraschino liqueur
1/2 PART Water
1/4 PART Gomme syrup
1/4 PART Fresh lemon juice
1/2 PART Fresh orange juice
1 Lemon twist
1 Orange twist
2 Fresh raspberries
2 Chunks of diced pineapple
1 PART Soda
BUILD All ingredients in a mixing glass over ice, then transfer contents into a punch cup