The scary thing is, it looks exactly like something out of a Seuss book. Which may mean that Dr. Seuss was already channeling dark-forces-that-man-was-not-meant-to-comprehend through his books. SAN = 0.
Yeah... Lovecraft pronunciations always seem rather up in the air. I've always thought of it as "RILL-yah"... but then, I always pronounce "Cthulhu" as though the "C" was silent.