One of my favorite designers is Patrick Lose, who I got a chance to meet last weekend. He has a studio here in Phoenix that is full of some of his wonderful designs. You can get copies of his patterns, or even buy some of his fabric, both current and some discontinued.
Why do I like Patrick's designs? I think it's his sense of whimsy that he instills in his patterns. The patterns are always applique, but the piecing tends to be pretty simple. Patrick loves bold colors (as do I), and isn't afraid for his work to be colorful.
If you haven't checked out Patrick's work. You can find him at www.PatrickLose.net.