I'd dare say they're a dynasty now. The NFL is a much different animal now than it was in the days when teams won multiple SBs in a few years (ie Steelers, Cowboys, 49ers,etc.) Winning 19 games in a row is as impressive a streak now as it was then. It puts the Patriots in exclusive company among the NFL's greatest teams. I don't like throwing the word dynasty around, but I think the Patriots are deserving of being called a dynasty.