This is from the George Foreman Knock Out the Fat cookbook and it's very good. It's appropriate to use on chicken or beef, but not fish.

Fat-Free Garlic Wine Marinade

1/2 cup balsamic vinegar

1/4 cup sweet Marsala, sherry, or sweet white wine

2 Tablespoons fresh lemon juice

2 Tablespoons chopped fresh oregano or 1 Tablespoon dried

2 Tablespoons chopped fresh basil or 1 Tablespoon dried

1/4 teaspoon freshly ground black pepper

4 garlic cloves, minced

In a medium bowl, combine all the ingredients, mixing well, and set aside until ready to use. 

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