I remember hearing his name a lot around when Jurassic Park was coming out. I was 7 years old at the time and hardcore into dinosaurs and this dino-masterpiece just happens to get released. It was toys, books (was too young for the original book tho) and TV specials at all times and I learned about Stan and the groundbreaking stuff for JP. His name pretty much became synonymous with guaranteed excellent effects in my book...as well as so many others I'd guess.
This sucks tho. He still could have made awesome and original effects for 10-15 years. Damn diseases.