Quora answer: What do biologists think of Stephen Jay Gould?
Stephan Jay Gould was not just a popularizer, but a serious evolutionary biologist who dealt with the problem of integrating punctuated equilibrium ideas into evolutionary theory.
http://en.wikipedia.org/wiki/Stephen_Jay_Gould
http://en.wikipedia.org/wiki/Punctuated_equilibrium
http://en.wikipedia.org/wiki/The_Structure_of_Evolutionary_Theory
http://www.quora.com/What-do-biologists-think-of-Stephen-Jay-Gould