Two Back Attack is the norm... Who's got the best?

N.O. (slightly homer)
Washington (if Portis is healthy)
Indy
Jacksonville
N.Y. Giants (given the above condition)

I think N.E. is up there too when you consider that they also rely heavily on Kevin Faulk, especially in 3rd down situations, and seems to come through more often than he is given credit for. Also, although they may not be worth noting, Houston also relies on the running back by commitee approach with a slew of RBs last year (Dayne, Lundy, Taylor, Gado, and with Davis/Williams hoping to come back this year).