In 14 seasons Iron Mike, 50, whipped three teams into the finals and won the Stanley Cup with the Rangers. His career record is 506-372-117, but he was 83-105-35 over the last four seasons with the Blues and the Canucks, and he can be destructively tyrannical.
Now 41, he was Coach of the Year after guiding the downtrodden Sabres to a 40-30-12 record in 1996-97. Nolan stepped aside after that season amid disagreements with management. Some prospective employers fear that he's difficult to work with.
The Verdict: Keenan's a bigger risk, but he just may have another championship run in him.