NetflixOnlineMovieRentals - Netflix offers a great variety of movies.  They have both regular and Blu-ray dvd’s available for online rental.  Their prices are quite reasonable and their customer service is great.

Blockbuster - Great Customer Service.  Prices are also reasonable.  Wide selection of online movie rentals.

Cafedvd - Customer service is very good, but not as good as Netflix or Blockbuster.  Movies come on time and they also have a wide selection to choose from.

Dvd Avenue - Prices are good and movie selection is amazing. 

Flixclub - Might possibly emerge as on of the top online movie rental companies.  Their customer service is hands on and their movie selection is great.