while I'm on 4gamer... they just published an interview with series director Masayoshi Kikuchi and art director/character designer Ryuta Ueda on the making of the original Jet Set Radio games:
I don't have time to break this one down, plus I suspect it's all stuff JSR diehards have probably heard before, but here's one tidbit that caught my eye: De La Jet Set Radio, the re-iimported Japanese version-up of the original JSR that included the additional content produced for the international release, was deliberately timed by the producer to be the very first game released in the 21st century