Bennett Greenspan is the founder of Family Tree DNA. He created the concept of Genetic Genealogy and his company tests more than 90% of the genealogists who use DNA to further their learning. He is also a very nice man.
Here's a link to a recent interview with Bennett:
Hope you Enjoy!
Note: WorldFamilies has a business relationship with FTDNA - but I'd be pleased to include this interview even if we didn't. FTDNA is one of the most honest, highest integrity companies I have ever worked with.