He's on pace for 28 interceptions, which would be five more than he's ever thrown in a season. He should get a lot of yardage and plenty of TD's this year because the team is bad and is playing catch-up in almost every game. I think Favre is playing on about the same level that he was in 1999 and 2000, but he had nagging injuries both those years (his thumb and his wrist, I think), and this year he doesn't have any nagging injuries. So I'm not taking a whole lot of solace in the stats.
I do hope he gets more support from his teammates and somehow finishes out the season (and possibly his career) on a more positive note, though. He's been a great player for the Packers for a lot of years, and I wish him nothing but the best.
