Ken, have you and your wife tried Midori? Midori is a bright green, sweet Japanese honeydew melon-flavored liqueur produced in Mexico by Suntory. My wife and I enjoy Midori sours. I make them thusly: put ice in cup, equal parts Midori and sweet and sour, and stir. At most local bars, a "Midori sour" usually includes some kind of fruit juice (orange, pineapple), but to both of us, it dilutes the drink way too much.
Another sweet classic that I like is the White Russian/mudslide: vodka, Bailey's Irish cream, and Kahlua coffee liqueur. I think they are in equal parts (I've not yet tried one at home, only at bars/restaurants). Applebee's has a great one (mudslide) served over/in vanilla ice cream. The alcohol taste is minimal, to me, and - hey - you get to eat ice cream!
At some bars, I've had some white Russians that tasted like chocolate milk. Danger!
