Brett Favre is the all time touchdown leader surpassing Dan Marino with 421 touchdown passes and counting. (Photo by Matthew Stockman/Getty Images)

Dan Marino recorded 420 touchdown passes in 17 seasons in the NFL. (Photo by Peter Brouillet/WireImage.com)

Fran Tarkenton recorded 342 touchdown passes in 18 seasons. (Photo by NFL/WireImage.com)

John Elway recorded 300 touchdown passes in 16 seasons in the NFL. (Photo by Getty Images.)

Johnny Unitas recorded 290 career touchdown passes in 18 seasons in the NFL. (Photo by NFL/WireImage.com)

Peyton Manning has recorded 279 touchdown passes and is currently in his 10th season in the NFL. (Photo by Andy Lyons/Getty Images)

Vinny Testaverde has 270 career touchdown passes and is currently in his 21st season in the NFL. (Photo by Rick Stewart/Getty Images)

Warren Moon recorded 291 touchdown passes in his 17 seasons in the NFL. Photo by Stephen Dunn/Getty Images.

Joe Montana recorded 273 career touchdown passes in 16 seasons in the NFL. (Photo by Al Messerschmidt/WireImage.com)

Dave Krieg recorded 261 touchdown passes in his 19 year career in the NFL. (Photo by Scott Halleran/Getty Images)