Saw this hyperlinked on smart football as a defensive formation and thought I would share it: the Arizona Desert Swarm 4-3 Shift Flex Double Eagle Front.
The personnel seems to coincide with what Michigan will feature this fall (i.e. a strong safety/hybrid player acting as a strongside LB, a three-deep, a "B-gap flex player who is one-part LB and one-part tackle" that sounds like Roh (although I don't think Roh's responsibilities will be for the B-gap...didn't he rush the outside?).
Hoping steve sharik can comment and that others enjoy the look.