I'm brewing my Summer Citrus Wheat a third time, due to the overwhelming responses...people love it! It is more of an american wheat than a Hefeweizen, but you could change the yeast to WLP300 or Wyeast equivalent and have a certifiable Hefe.
It definitely contains more hops than most wheats...but I find the Cascade citrus flavor goes well with the yeast and the small amount of dried orange peel. The first time I brewed it, I only used 1 oz. Cascades for 60m...and it left a little to be desired flavor-wise. The extra hop addition at 30 minutes contributes to the IBU and flavor, and the last addition just accentuates the orange peel.
Link to recipe