[RedsBaron]

Kurt Warner may have just guaranteed his eventual induction into the Pro Football Hall of Fame.
I'm trying to think of other quarterbacks who lead two different teams to the Super Bowl. Craig Morton was the QB of both the 1970 Cowboys and 1977 Broncos, both of whom lost the Super Bowl, but Morton was more of a caretaker QB than a leader;both of those teams won their conference primarily because of their defense.
Earl Morrall was voted the NFL MVP in 1968, while taking the Colts to Super Bowl III, where he ran into Joe Namath and the Jets. He relieved an injured Johnny Unitas two years later in Super Bowl V, an error filled game in which his Colts did rally to defeat Craig Morton's Cowboys. Morrall also quarterbacked the 1972 Dolphins for much of their 1972 unbeaten season, after Bob Griese was hurt, but Griese came back to QB Miami in the AFC championship and Super Bowl games.
I can't recall any other examples.