It may seem silly now, but replacing the No. 1-overall draft pick/face of the franchise with a little-known backup was once a big deal in New England. Watch clip. (AP Photo/Michael Dwyer)

Teetering on the brink of a dynasty, the Steelers went into their first Super Bowl season and chose Joe Gilliam over Terry Bradshaw. Watch clip. (AP Photo/HC)

Looking to light a fire in No. 1 pick Troy Aikman, Cowboys coach Jimmy Johnson drafted a second QB -- Steve Walsh -- in the same offseason. Watch clip. (AP Photo/Lenny Ignelzi)

After being shamed by Jay Schroeder in the NFC title game, Doug Williams got the last laugh by taking the Redskins to a Super Bowl win a year later. Watch clip. (Associated Press/NFL)

After signing Rob Johnson to a hefty contract, the Bills got fan favorite Doug Flutie for much less. What followed is still a point of contention in Buffalo. Watch clip. (AP Photo/David Duprey)

Having two Super Bowl-winning quarterbacks on the same roster competing for one job put the Giants in a precarious spot. Watch clip. (National Football League)

With Drew Brees already on the roster, the Chargers made a draft-day move for Philip Rivers. Immediately, there was controversy. Watch clip. (AP Photo/Denis Poroy)

The Los Angeles Rams of the 1950s were on the cutting edge of offensive innovation, thanks to the play of Norm Van Brocklin and Bob Waterfield. Watch clip. (National Football League)

Tom Landry's decision to go with Roger Staubach over Craig Morton helped set the course for the Cowboys to become "America's Team." Watch clip. (NFL/Associated Press)

Like Van Brocklin and Waterfield before them, the 49ers had two future Hall of Famers at QB. Unlike those '50s Rams, the 49ers' QBs couldn't coexist. Watch clip. (AP Photo/Al Golub)