The relationship between quarterback and coach is perhaps the most important one in the NFL.
While there are coaches like Tom Landry and Don Shula who had success with multiple quarterbacks (Landry had great runs with Don Meredith, Craig Morton, Roger Staubach and Danny White, while Shula had great success with Johnny Unitas, Earl Morrall, Bob Griese and Dan Marino), other coaches will forever be linked to their starting quarterbacks.
Bill Walsh will forever be linked to Joe Montana, Vince Lombardi will always be linked to Bart Starr, and despite Mike Holmgren's success in Seattle with Matt Hasselbeck, if you ask any football fan to connect him to a quarterback, odds are they'll say Brett Favre.
This still rings true today. While there are coaches who have had varied success with different quarterbacks or are still looking for their franchise guy, the NFL has seven quarterback-coach duos who are currently very dependent on each other.
Here's a look at those seven.