Here is a list of the Top R Related Interviews I have done (in random order)-
1) John Fox , Creator of R Commander
2) Dr Graham Williams, Creator of Rattle
3) David Smith, back when he was community Director of then Revolution Computing.
and his second interview
4) Robert Schultz, the first CEO of Revolution Computing (now Analytics)
6) Karim Chine, creator Biocep, Cloud Computing for R
7) Paul van Eikeran, Inference for R,the first enterprise package to use R from within MS Office.
8) Hadley Wickham, creator GGPlot and R Author
Thats a lot of R interviews- I need to balance them out a bit I guess.