Here is a 2010 NFL Unrestricted Free Agent list (as of Dec 1st), under the assumption that they do not renew the collective bargaining agreement. I've excluded certain positions (like K, P, RB, CB, S) that we don't need any more help at. If they do reach an agreement, a lot more names become UFAs.
QB:
Charlie Batch
Kyle Boller
Mark Brunell
David Carr
Daunte Culpepper
AJ Feeley
Rex Grossman
Josh McCown
Chad Pennington
Chris Redman
Brian St. Pierre
Seneca Wallace
WR:
Arnaz Battle
Marty Booker
Antonio Bryant
Nate Burleson
Chris Chambers
Terrance Copper
Brian Finneran
Mike Furrey
Greg Lewis
Brandon Lloyd
Derrick Mason
Shaun McDonalds
Mushin Muhammad
Kassim Osgood
Terrell Owens
Josh Reed
David Tryree
Bobby Wade
Kevin Walter
Kelley Washington
TE:
Anthony Becht
Dan Campbell
Alge Crumpler
Darnell Dinkins
Michael Gaines (Damn buddy, sign a 2 year deal or something!)
Ben Hartsock
Reggie Kelley
David Martin
Randy McMichael
Billy Miller
Sean Ryan
LJ Smith
Ben Watson
Kris Wilson
Todd Yoder
OT
Chad Clifton
Damion Cook
Mike Gandy
Brandon Gorin
Cornell Green
Jon Jansen
Levi Jones
Damion McIntosh
Tony Pashos
Ephraim Salaam
Barry Sims
Wade Smith
Mark Tauscher
Ryan Tucker
Langston Walker
Mike Williams
OG:
Eugene Amano
Jeremy Bridges
Kynan Forney
Rex Hadnot
Ben Hamilton
Artis Hicks
Ross Hochstein
Montrae Holland
Scott Koositra
Seth McKinney
Stephen Neal
Chester Pitts
Tutan Reyes
Keydrick Vincent
Bobbie Williams
DE:
Jason Babin
Bertrand Berry
Tyler Brayton
Derrick Burgess
Phillip Daniels
Ryan Denney
Marques Douglas
Nick Eason
Jarvis Green
James Hall
Reggie Hayward
Jevon Kearse
Travis Kirschke
Leonard Little
Adewale Ogunleye
Julius Peppers
Cory Redding
Richard Seymour
Kyle Vanden Bosch
Jimmy Wilkerson
Renaldo Wynn
DT
Justin Bannan
Alfonso Boone
Kendrick Clancy
Dwan Edwards
Jason Ferguson
Aubrayo Franklin
Casey Hampton
Tank Johnson
Jimmy Kennedy
Ryan Pickett
Fred Robbins
bryan Robinson
Ian Scott
Kenny Smith
Hollis Thomas
Vince Wilfork
Jeff Zgonina
OLB
Tully banta-Cain
Keith Bulluck
Brandon Chillar
Danny Clark
Angelo Crowell
Chris Draft
Scott Fujita
Nick Greison
Aaron Kampman
D.D. Lewis
Darrell McClover
Chike Okeafor
Junior Seau
Jason Taylor
Chaun Thompson
Pisa Tinoisamoa
Mike Vrabel
Tracey White
Sam Williams
ILB
Gary Brackett
Khary Campbell
Vinny Ciurciu
Karlos Dansby
Larry Foote
Ryan Fowler
Tony Gilbert
Larry Izzo
Jeremiah Trotter
Jeff Ulbrich
Matt Wilhelm