That was George Blanda of the Houston Oilers who threw 42 interceptions in 1962. Second highest is Vinny Testeverde of the Tampa Bay Buccaneers who threw 35 interceptions in 1988.
Through the 2008 season in the NFL, that is Brett Favre with 310 career interceptions.
Unknown, as the 2010 NFL season has not begun yet.
michael jordan
In 2010, Eli Manning of the New York Giants threw the most interceptions with 25.
In the 2016 NFL season, Philip Rivers had the most interceptions among quarterbacks.
Brett farve for a fact has thrown the most touchdowns. But I'm not sure if he threw the most interceptions as well
Dan Fouts. Fouts threw 242 career INTs, 12th most overall through the 2010 season, and never led the NFL in interceptions for a season. The closest he came was 1979 when he threw 24 INTs and the NFL leader was Brian Sipe with 26.
11 in 1975. He led the NFL in interceptions that season.
Bret favre
Jim hardy of the cardinals threw 8 interceptions in a game in the 1950's
Peyton Manning
In the NFL, the record for interceptions in a season is 14 by Dick 'Night Train' Lane of the Los Angeles Rams in 1952.