"Herbert West - Reanimator" is definitely prime Lovecraft, from the deliciously overwrought descriptions like "a horde of silent toiling things which only insanity--or worse--could create" to, er, this passage:
The negro had been knocked out [in the boxing match], and a moment's examination shewed us that he would permanently remain so. He was a loathsome, gorilla-like thing, with abnormally long arms which I could not help calling fore legs, and a face that conjured up thoughts of unspeakable Congo secrets and tom-tom poundings under an eerie moon. The body must have looked even worse in life--but the world holds many ugly things.
Oy yoy yoy. We all know Lovecraft was flamboyantly racist--how many swarthy, foreign manservants speaking exotic, devilish languages appear in his oeuvre?--but sometimes you forget and you stumble across a passage like this one, and it's like a cold, bracing slap in the face. And this probably isn't even the worst of his racism! That might arguable be found in his story "The Rats in the Walls," in which the narrator's black cat is named "Nigger-Man." (Lovecraft certainly isn't the only classic horror author to be this blatantly and astonishingly racist, either. Check out Edgar Allan Poe's "The Gold Bug" sometime and try to count how many times he uses the word "nigger" before your head explodes.)
It's tough loving the work of an author, or any creative artist, who comes across as an awful human being. This is why I've long advocated the practice of separating the artist from the art. One does not have to agree with, or even like, Mel Gibson to appreciate his work as an actor or director, for instance. In that same vein, I think Lovecraft is a brilliant author, though often more in his concepts than in his writing style, even if he would probably be seriously embarrassing dinner company.
Your mileage may vary, of course. For instance, I might feel totally different about Lovecraft or Poe if I'd spent a lifetime having the N-word thrown at me. For me, it was a bit of a shock when I read Robert W. Chambers' The King in Yellow and came across the line:
We had profited well by the latest treaties with France and England [and by] the exclusion of foreign-born Jews as a measure of self-preservation...
Yikes! Luckily, I'm a native-born Jew and maybe would have been allowed to stay!
Anyway, separating the artist from the art. Sometimes it's hard. Now I think Chambers is a dick and unworthy of anyone's attention! But ultimately, I know that's not true, at least not the latter part. Maintaining that separation is worth it. Lovecraft might have been a racist prick, but the genius of his stories lives on, and much more strongly than the ugliness in them does.