Among the authors Crawford Kilian lists on The Tyee website are Tolkein, Rand, and Hemingway. And I have myself just been reading the work of a Kerouac-wannabe who would do so much better trusting his own voice. (Pic of the author left.) Rushdie has a hell of a lot to answer for too. Any more you can think of?
Also listed are those authors who might be dangerous to newer writers - simply because they are so good they leave us dumbfounded!