Mark Anderson, Houston Texans — After 12-sack rookie season with the Bears in 2006, Anderson struggled to get to the quarterback since and Chicago eventually gave up on him. He still has use as a pass-rushing specialist with his athleticism and speed, but he's not an every-down player.
Dave Ball, Tennessee Titans — Originally a 3-4 end with the Chargers, Ball has slimmed down to 255 pounds and quietly racked up seven sacks in 11 starts for the Titans in 2010. He's not really a starting candidate at 30, but he's a quality backup at this point in his career.
Raheem Brock, Seattle Seahawks — Despite not officially starting a game in 2010, Brock racked up a career high nine sacks in 2010 at age 32. His starting days are probably behind him, but his most recent season shows he could be a great backup to have for 2-3 years.
Tim Crowder, Tampa Bay Buccaneers — A former second-round pick by the Broncos in 2007, Crowder peaked with a career-high four sacks as a rookie. He's still just 25 and has the room to grow, but he needs some coaching up to make a real impact.
Nick Eason, Pittsburgh Steelers — Originally a pass-rushing end out of Clemson, Eason has bulked up and become a solid 3-4 defensive end in in Pittsburgh. He's not going to get to the quarterback, but he plays the run well and is an ideal backup that can start in a pinch.
Ray Edwards, Minnesota Vikings — Starting opposite Jared Allen in Minnesota, Edwards has racked up 23.5 sacks over the past three seasons. He's talented, but he really thinks a lot of his value on the open market and in reality his production might be inflated due to the Vikings' talented line. He's going to want big money in free agency, and he's a risky guy to sign to a huge deal.
Shaun Ellis, New York Jets — His pass-rushing days are behind him, but Ellis has become one of the more reliable 3-4 ends in the NFL. He's a good run-stuffer and probably has a few more years of starting ability left in the tank.
Jonathan Fanene, Cincinnati Bengals — Fanene missed most of the 2010 season with a hamstring injury, but he was a good run-stuffer and notched six sacks in 2009. He's a bit of a tweener with some position versatility and he's a good backup to have.
Jacob Ford, Tennessee Titans — Ford's production has fallen each of the past three seasons, but he's still young and has some time to develop. He's worth picking up as a backup and giving him a shot to compete.
Travis LaBoy, San Francisco 49ers — LaBoy totaled five sacks in 14 games for the 49ers in 2010, which is about par for the course for the six-year veteran. He's a nice backup pass rusher, but he's proved time and time again he just doesn't have what it takes to start.
Turk McBride, Detroit Lions — A disappointment in Kansas City, McBride set career highs with five sacks and three forced fumbles for the Lions in 2010. He's not big enough to be a defensive tackle and doesn't have the athleticism to be a great pass rusher, which places him squarely as a backup-type player.
Bobby McCray, New Orleans Saints — McCray peaked with a 10-sack season in Jacksonville in 2006, but he was a free-agency bust in New Orleans and spent most of 2010 out of football. Don't expect much more from him.
Quentin Moses, Miami Dolphins — Moses was cut by the Raiders as a rookie third-rounder in 2006 and landed in Miami after a brief stint in Arizona. He's done little to showcase himself to date and doesn't help on special teams, so he's really not even worth keeping around as a backup. His collegiate production will get him more chances, though.
Jarvis Moss, Oakland Raiders — A dominant pass rusher at Florida, Moss was a huge bust as the 17th-overall pick by the Broncos in 2007 and has totaled just 4.5 sacks in four seasons. Something is missing from this equation and he seems unlikely to ever live up to his potential, but his raw ability will get him some more opportunities from teams that think they can change him.
Brian Robison, Minnesota Vikings — Robison has totaled 13.5 sacks in four seasons as a backup with the Vikings. He could develop into a serviceable starter, but he lacks the tools to ever be a real impact player.
Stylez G. White — The man who gives Chad Ochocinco a run for his money for the dumbest name in football has done little since notching eight sacks and a whopping seven forced fumbles as a rookie in 2007. There's ability here, but a continued flame out is more likely.