From Programmer 97-things
Heinz Kabutz is the author of The Java Specialists' Newsletter, an advanced Java publication read by 50,000 Java specialists in 120 countries. Most of Heinz's time is spent writing Java code as a contractor for a number of companies. In addition, he lectures companies on how to write more effective Java, taking advantage of the advanced features.
Heinz is a Java Champion and was interviewed by Sun Microsystems (see http://java.sun.com/developer/technicalArticles/Interviews/community/kabutz_qa.html).