I run them from time to time. It's one of the few things the Smith Machine is good for. Scorches the peewaddins out of my inner triceps. I couldn't see doing them with real heavy weights or without a spotter or Smith.
Not a bad exercise. Not the be all/end all either.
Bogdan Petia Sarac - Must keel moose and squirrel
Cancer Survivor - 7/21/10
Benchmark 5K time: 27:45 (3/5/11)
It's not the weight we move, but the people we move that matters. -- Bearded Beast of Duloc (12/31/10)