Until about the 5th game, most people make their predictions based on what a team was the previous year. There's always a 4 game burn-in for a team due to many factors -- new players, new plays, injuries, etc.
I like the spot the Packers are in right now... they're the dangerous underdogs, always mentioned as "in the conversation" but not the big sexy pick. The popular choices this year seem to be Philly and New Orleans so far.