I'll just throw in that vegetables (and perhaps fruits) are largely better for you than grains, but if you're just looking for an easy way to add fiber, there are several good cereals that can add a -lot- of fiber to your diet. FiberOne is huge; All-Bran is great and even Raisin Bran has quite a bit. There are also some pretty tasty Metamucil wafers that taste like cookies and have I believe 6g dietary fiber, and off the top of my head I think 5g of that is soluble.