I think
Jim McKenzie was very underrated. He dropped
Tony Twist not once but twice. He managed to stick around for a long time (14 seasons) during which he played for 8 different teams! He knew what his role was and performed it very well. I'm glad he won a Cup with New Jersey.
Some other guys that McKenzie beat that weren't on jkidd's list include:
Bob Probert,
Stu Grimson twice (although the Grim Reaper dropped him in one fight),
Shawn Cronin,
Tim Hunter,
John Kordic,
Francois Leroux,
Randy McKay,
Chris Nilan,
Mick Vukota,
Ryan VandenBussche,
Reid Simpson,
Jim Cummins, and
Mike Peluso. He also managed to beat young up and coming enforcers near the end of his career like:
Andrew Peters,
Jody Shelley, and
Wade Belak (put a beating on him).