The novel I Am Legend still holds up while simultaneously being a relic of Atomic Age fears. While some of the science may not be perfectly accurate, and some of the functionality of some technology doesn't quite hold up to a post-apocalyptic timeline, I was able to excuse these while reading due to the snappy pacing, straightforward storytelling, and rather excellent action sequences. From a historical standpoint, this novel is a milestone as this is where vampires have turned away from the gothic romantic figures to the mundane and the monstrous. Its influence on future writers cannot be discounted. I can see "Come out, Neville!" sticking in the brain of Stephen King and creeping out later. This novel would make an excellent film adaption someday. 
 The short stories were a mixed bag for me. It's clear he was an influential writer for The Twilight Zone, as many of the stories had that feel. I really enjoyed the quick sting of "The Near Departed" and the monstrousness of "The Prey". My childhood recollection says the latter was brilliantly adapted to the small screen. The pacing and tension is great, and the ending puts us in a place not quite expected and far more ominous than I had suspected.