By BARRY WILNER The art of the sack was never lost on these five guys:Bruce Smith, Derrick Thomas, Claude Humphrey, Richard Dent and John Randle.Among the greatest practitioners of wrestling quarterbacks to the ground, they are among 17 finalists for the Pro Football Hall of Fame. A minimum of four finalists and a maximum of seven will be chosen Saturday.While defensive ends and linebackers shouldn't be measured solely on their proficiency at rushing the passer, this group certainly stood out in that area.