ESPN provides the following news on Jarrett Jack:
The 6-foot-3 Jack was the top scorer (15.5 points a game) on a team that reached the second round of the NCAA tournament. As a sophomore, he starred in Georgia Tech's improbable run to the national championship game.
Jack has spent countless hours working on his shot, which showed last year when he led the Yellow Jackets in 3-point shooting (44 percent). He's a strong, physical player who can muscle up defensively or help out on the boards. But there are questions about his quickness.
At NBAdraft.net Jarrett Jack is compared to Eric Snow:
Very intelligent guard with good competitiveness ... Jack possess great size, strength and good athleticism for the point guard position ... He is an unselfish player with the ability to find the open man ... Jack has very quick hands and a knack for grabbing loose balls in transition ... Has excellent penetration ability and is a great finisher, but usually chooses to drive and dish the ball out¦ Jack is a great rebounder for his position and has developed a steady three point shot (college range) ... He can also post up smaller point guards and take advantage of his size¦His body and athletic tools also make him an good defender... Overall Jack is a physical point guard with good vision and knack for finding the open man.
Here is Jarrett Jack's official biography from Georgia Tech.
And just for fun, check out this SI.com article that tells us Jarrett Jack is already best friends with essentially everyone in the NBA.