Offense

Quarterback:
5. Brett Farve
4. Steve Young
3. John Elway
2. Johnny Unitas
1. Joe Montana

Running back:
5. Marshall Faulk
4. Emmitt Smith
3. Barry Sanders
2. Walter Payton
1. Jim Brown

Wide Receiver:
5. Marvin Harrison
4. Tim Brown
3. Michael Irvin
2. Randy Moss
1. Jerry Rice

Tight End:
5. Mike Ditka
4. Shannon Sharpe
3. Kellen Winslow
2. Antonio Gates
1. Tony Gonzales

Offensive Linemen:
5. Forrest Gregg
4. Bruce Matthews
3. Gene Upshaw
2. Larry Allen
1. Anthony Munez

Defense

Linebacker:
5. Dick Butkus
4. Jack Ham
3. Ray Lewis
2. Jack Lambert
1. Lawrence Taylor

Safety:
5. Ronnie Lott
4. John Lynch
3. Brian Dawkins
2. Ed Reed
1. Steve Atwater

Corner back:
5. Lem Barney
4. Charles Woodson
3. Dick Lane
2. Deon Sanders
1. Rod Woodson

Defensive End:
5. Julius Peppers
4. Chris Doleman
3. Bruce Smith
2. Deacon Jones
1. Reggie White

Defensive Tackle:
5. John Randle
4. Warren Sapp
3. Bob Lilly
2. Mean Joe Greene
1. Alan Page

Special Teams

Punter:
5. Jeff Feagles
4. Shane Lechler
3. Jerrel Wilson
2. Sammy Baugh
1. Ray Guy

Kicker:
5. George Blanda
4. Jan Stenerud
3. Adam Vinatieri
2. Gary Anderson
1. Morten Andersen

legacyme3 : You always seem to have interesting opinions, tell me what you think. 

I don't really know much about football, to be honest. I watch it as a casual fan, but historically, I only know players who were well known, and might miss somebody who is better than their reputation.

QB
1. Brett Favre
2. Joe Montana
3. Steve Young
4. Peyton Manning
5. John Elway

RB
1. Barry Sanders
2. Emmitt Smith
3. Jim Brown
4. OJ Simpson
5. Walter Payton

WR
1. Jerry Rice
2. Michael Irvin
3. Randy Moss
4. Terrell Owens
5. Calvin Johnson

Beyond that, I really couldn't tell you. Those are the only three positions I know much of anything about.