And also got an Oscar

Exactly. And "his" branch of physics has led itself into a dead end, waiting for someone to reform it.

All his stuff is peer reviewed, just like all valid science.

I must say I agree with 'guest'. Peer reviewed work does not mean that it is applicable. His principle models might equate, but in practice it is a different story.

Most of his work isn't practical because it's in the category of theoretical physics, and his stuff on general relativity is generally very applicable. It only (relatively) recently that he's been proven outright wrong about anything. (HBP for example)