1. Terry Glenn (Best)
This one may be a head scratcher, but Terry Glenn helped turn the Cowboys around in 2003. After bringing in Bill Parcells after three straight 5-11 seasons, Jones spent the offseason upgrading the offense. One addition was Glenn, who Dallas traded for from the Green Bay Packers for a 2004 sixth round pick.
Glenn was hobbled by injuries in Green Bay, making most believe his best days were behind him. He proved critics wrong, leading the Cowboys in receiving that season with 754 yards and five touchdowns. Alongside Joey Galloway and rookie Jason Witten, Dallas enjoyed their best offensive season under quarterback Quincy Carter. The team made the playoffs at 10-6 for the first time since 1999.
While injuries limited Glenn to just six games the following season, he rebounded the next two. He had his first 1,000-yard season since 1999 with 1,136 receiving yards and a career-high seven touchdowns. In 2006 he had 1,047 yards and six touchdowns. Despite having other guys like Keyshawn Johnson and Terrell Owens on the roster during those years, Glenn was arguably the best receiving option for Drew Bledsoe and a young Tony Romo.
Glenn's career ended on a low note with an injury in 2007 that kept him out all but one game, but his contributions in Dallas are remembered for fans of the early 2000s teams. The fact Dallas was able to get a key piece on offense for just a sixth rounder is a steal most owners dream of.