If you've never read the full story of Sidd Finch, the Mets prospect whom George Plimpton profiled in the April 1, 1985, issue of Sports Illustrated, here is a nice excerpt of the oddball pitcher who could hit 168 m.p.h. with his fastball and wore a hiking boot when he took the mound.
There is also a nice summary of it all here.
(The full story is available if you're an S.I. subscriber.)