Magnum bittering, Cascade + Citra flavoring (20 mins or less remaining, no earlier), Citra flameout/whirlpool, Citra dryhops. Just won a Pro-Am on that.
I've had success with simple Cascade + Centennail (a classic American combo), and any variations with those 2 and another piney/grapefruit/citrus hop, such as Simcoe, Nelson Sauvin, Citra, Chinook, Amarillo, and more.
Oh, Amarillo + Simcoe is a great one too.