Grace Before Meals is centered on one fundamental concept: the simple act of creating and sharing a meal can strengthen all kinds of relationships. Founded by Fr. Leo Patalinghug in 2003, Grace Before Meals has grown from a simple idea to a worldwide movement, producing a book, blog and even a pilot for a TV show endorsed by PBS.I found out about this by listening to EWTN Radio's "Catholic Connection" hosted by Teresa Tomeo.
Research shows that having frequent family dinners can reduce the susceptibility of teens to risks like teen pregnancy, smoking, drug use and depression. And these benefits don’t just apply to traditional families or people with kids. Stronger families foster stronger communities, and that’s the goal we’re striving for–one meal at a time.
Check out Fr. Leo's web site. He has a page with several traditional prayers before and after meals, two of which are in Latin!