If we're using a basketball analogy here, then some of the bluegills I've hooked this year are probably named Shaquille. :hehe:
My hot fly for these huge 'gills has been a green/yellow frog popper in a size 4, complete with split hackle tail and rubber legs on the sides. I usually catch them when I'm casting to bass structure, but it's not disappointing when I realize that I've hooked a bluegill. Like Shadfreak said, these are the guys who have gotten so many of us started in the first place.
Not only will they move a kayak, but I've had a couple start moving my 11 foot john boat. Big shoulders and big attitude! A great combination.