Just this past weekend I had a Sparkling Pear cocktail at Sandrine's that was Grey Goose Poire, St. Germain, and cremant de bourgogne. It had great pear flavor and none of the sharpness I expected from such a vodka-centric cocktail.
In my exploration of paper and blogs I found this recipe for The Vieux Mot on http://ohsobeautifulpaper.com/.
1 oz Gin
1 oz St-Germain
3/4 oz Lemon Juice
1/4 oz Simple Syrup
1/4 oz Cointreau
A friend also gave me a tear-out of cocktail recipes from a St. Germain ad - what ingenious advertising! It features such treats as the Elderfashioned which is 1/2 part St. Germain, 2 parts bourbon and 2 dashes of Angostura Bitters. Or the classic St. Germain and Champagne, which in addition to being as simple to make as it sounds, also rhymes! Add some Chambord and a blackberry for a delicious riff on a Kir Royale.