CHICAGO - The Bears roughed up Brett Favre with their defense. They knocked him down, intercepted two of his passes and beat the Packers at Soldier Field for the first time since 1993.
Their victory was No.8 in a row - their longest streak since the 1985 Super Bowl team started 12-0.
"All the years I've played against them, I think defensively this is as well as I've seen them play," said Favre, who had a swollen wrist and a cut hand after hitting it on an opposing helmet in the third quarter.
Charles Tillman and Nathan Vasher had game-changing interceptions against Favre, who completed 31 of 58 for 277 yards against a team he had dominated over the years.
Tillman returned the first interception just before halftime 95 yards to set up one of Robbie Gould's four field goals, and Vasher took a late interception 45 yards to seal the win.
The Bears prevented Favre from throwing a touchdown against them - he'd done so in a league-record 26 straight games - and sacked him twice on hard hits from blitzing Tillman and Mike Brown.
The Bears, who had 67 yards passing from Kyle Orton and 188 yards of total offense, were 0-for-10 on third downs. Green Bay had the ball nearly 10 minutes longer than the Bears, but couldn't score in the second half.