i have so many that it will not be a short list.
terry pratchett for his truly amazing humour and ability to show reality mixed with fantasy. its ... WOW.
bill bryson for making simple things look madly funny.
tony parsons - man and boy and man and wife. emotional and profound!
p.g wodehouse ofcourse, for the fairy tale romances
malcolm gladwell for intriguing me and getting my already curious mind more curious
carl segan for writing some of the best science books as well as science fiction books around
kurt vonnagut for being wow... hehehe. really, he is. black humour at it blackest.
howard marks, if your interested in someone who has been there and done that and then 100 times more :)
well i could go on :)