Michael Vick is unique in NFL history for his rare combination of arm strength, field vision and speed.
He is dangerous because he can beat opposing defenses with his legs and his arm, getting the ball to any spot on the field.
Vick is also unusual, though, because he throws left-handed.
There are certain apparent advantages to that trait: Teams often put their best pass rusher on the blind side of a right-handed quarterback, so a lefty can sometimes get a better look at the rush.
For whatever reason, there have been very few elite left-handed quarterbacks in the league's history.
Given his performance this season, Vick is now among the best three.
Who ranks above Vick? Who comes up short? Who comes in at No. 1?