Jeff is one of the legends of Smalltalk. A member of the original Tek Smalltalk team, Jeff used to be a contributor to the Smalltalk Report and its predecessors. Jeff has been consulting on his own for well over a decade. He's also one of the first people to investigate applying XP to large projects...
See also Jeff Mc Kenna (note the slight change in capitalization)
See original on c2.com 