I read all kinds of books (one of my friends jokes that I will read anything that holds still long enough), but sci fi/fantasy is my favorite. I also love books on anthropology and archaeology and other sciences.
This collection of short stories was very hit or miss. Some of them gripped you and didn't let go until the end, while others just seemed to drag on forever. However, the common element of the cult of Cthulhu was a great one. Definitely worth reading for anyone with a love of sci fi and fantasy.