How good can Matt Flynn be?

Matt Flynn had an amazing game against the Detroit Lions in Week 17. Jeff Hanisch-US PRESSWIRE

Quarterback Matt Flynn threw for 480 yards and six touchdowns against Detroit yesterday, setting Green Bay Packers benchmarks in both categories. As Flynn passed names like Bart Starr, Brett Favre and Aaron Rodgers (not to mention 4,000-yard passers Lynn Dickey and Don Majkowski) in the Green Bay record books, he clearly played the best game of any passer this week, but where does it rank on the all-time list? And as Flynn enters free agency, what can it tell us about his future potential?