Today's grandparents aren't content to sit in their rockers doing needlepoint or whittling wood-modern grandparents are healthy and active. Grandma may be traveling the world, writing a book or taking dance lessons and Grandpa might be camping with the grandkids, playing a golf tournament or skydiving! Nana may have entered the family by marrying Grampa later in life, or Pop-Pop may be a beloved family friend who's always there when someone needs...