That reminds me of a funny dig at Ray Bradbury, from South Park. The "giants" of science fiction were being discussed. I'm doing this from memory, but the dialog went something like this:
Character 1: "... the giants of science fiction; Asimov, Bester, Clarke ..."
Character 2: "B for Alfie Bester? Really? Why not Bradbury?"
Character 1: "Bradbury. (condescending sniff). I'm aware of his work."
Well, to be fair while Bradbury certainly wrote his share of science fiction, his larger body of work is more oriented towards fantasy; he himself said that his only work of science fiction was Fahrenheit 451, and that the Martian Chronicles wasn't SF, but rather was fantasy.
Hence the condescending sniff, I suppose.