I remember both Andy Kershaw and Mark Lamarr naming Alexis Korner as an inspiration for their radio careers.
Most of my favourites have been mentioned apart from Tony Hall (recently discussed in Looking for an Echo) who was only a part time DJ.
A mention for the first American DJ I heard - Jack Spector who had a one hour taped show from New York broadcast on Radio Caroline around 1965 - the best thing on the pirate stations until I discovered Mike Raven.
Slightly more recently I used to really love Roger Scott's Sunday night show (which followed Andy Kershaw).
