Flaxseed is packed with Omega-3's and a fantastic source of fiber. Definitely a "super" food. =)
They do, however, have a distinct taste. I throw gound up seeds into my smoothies, onto breakfast cereals (oatmeal!) and even into muffins and such when I think about it.
Oh ~ and you can even use them as a substitute for eggs (mix ground seeds with enough water to make a egg-white like consistancy) when baking if you have someone who is either allergic to eggs or a vegan.