Crackle has it online with commercials:
FilmReference.com has a page of resources and describes the film as "one of cinema's finest and most uncompromising treatments of madness." An article at The Huffington Post calls it "one of his greatest pictures, a brilliant portrait of female sadness, alienation, sexual neurosis turned to psychosis. A movie all women should watch -- his masterpiece..." Senses of Cinema has an article discussing the theme of confinement. Slant Magazine has a review. The New York Times opens with this:
An absolute knockout of a movie in the psychological horror line has been accomplished by Roman Polanski in his first English-language film.
Moria gives this a top 5-star rating and says,
Repulsion is a film where Polanski rather disturbingly makes no distinction between where the real world leaves off and where hallucination begins. Watching the film we are entirely sitting inside the mind of a mad person.
11/23/2009: Horror Movie a Day has a review, focusing on the Criterion release.