Have you tried Vudu?

Vudu is an online service that provides streaming access to rental movies and other content. Two of the key attributes of the service are 1080p resolution and instant streaming (provided you have sufficient bandwidth). As a measure of the growing interest in broadband-delivered video content, two major HDTV manufacturers have recently announced plans to support Vudu directly in their sets.

Mitsubishi is now shipping two Diamond Unisen LCD HDTVs — the 46″ model LT-46249 and the 52″ model LT-52249 — that support the Vudu service. And LG includes support for Vudu on their LH50 and PS80 series of flat panel TVs.

As support for broadband delivery of content becomes a standard feature for more and more HDTV sets, this will only expand the interest and demand for these services. The adoption of broadband video content is accelerating rapidly.