I found this recipe in a Glamour magazine (don't laugh). It is hands down one of the easiest and most delicious ways to spice up chicken breasts, and if you marinate a flank steak, I guarantee you'll have a main course fancy enough for company!
4 cloves minced garlic
1 TBS minced ginger - if I don't have a ginger root - I throw in a little powdered ginger
1/4 c. soy sauce
1/4 c. sugar
2 TBS freshly squeezed lime juice (I tend to use a little more - about two whole limes squeezed)
1 TBS roasted sesame oil (I substitute regular olive oil if I'm out)
4 grinds fresh pepper
(Lately I've been adding a pinch of red pepper flakes for a little extra heat too)
1 flank steak (approximately 1 lb to serve four)
Mix all the marinade ingredients together in a bowl and then add steak/chicken. If you're using a steak, I'd opt to marinate overnight for maximum flavor and then grill to your liking (we tend to go medium rare). If you're using chicken, I like to use the breasts with the skin and the ribs for grilling, and you can make this marinade the day you're going to cook.
I've served this so many different times and everyone always loves it. I like it with a big green salad with goat cheese, pecans and cranberries with vinagrette (aka my "pregnancy salad") and with mashed potatoes in the winter or rice in the summer. It's really delicious with a pinot noir or a syrah - but it is also good with rose/pink champagne.