Some good looks at Sage Rosenfels at The Ragnarok and Defensive Indifference.
Whoever wins the starting job, let's say this: IF* the Vikings do sign T.J. Houshmandzadeh, we're going to find out if Brad Childress and Darrell Bevell really are lousy offensive minds. The Viking offense would be loaded, featuring a RB that led the league in rushing and averages 5.2 yards per attempt, a deep-threat WR that averaged 20.1 yards per catch (on 48 total receptions, 14 went for 20+ yards and seven went for 40+), and a possession WR that has caught 90+ passes in each of the past three seasons. That would be loaded--with talent like that, what excuse would Childress/Bevell have if the offense fails to consistently move the ball and score points? And incidently, there would be little excuse for either Tarvaris Jackson or Sage Rosenfels to struggle, either.
*see that word "IF" in capital letters, italics, and bold font?