How about Brian "The Boz" Bosworth? He had the distinction of getting run over by baseball player and football hobbyist Bo Jackson once. Not many linebackers can make that claim.
He's the poster boy for players that were hyped up in college, but became a tackling dummy in the NFL......and a crappy actor..
Roger that! In all seriousness, though, Butkus is my 1st choice, Singletary #2. What can I say, I'm a Bears fan!