Dennis Massie first got involved with ILL more than 40 years ago at NASA's Jet Propulsion Laboratory library.  After serving as head of ILL at NYU's Bobst Library, Dennis spent the next 28 years coordinating the SHARES resource sharing consortium for RLG and OCLC, conducting original research on collection sharing, and helping design and build free tools such as the OCLC ILL Cost Calculator and the International ILL Toolkit.  Currently he helps foster community amongst ILL practitioners through his new organization, Borrower and Lender Be.