On Demand is a brilliant theme from the folks at Press75. Inspired by the famous movie website Hulu.com, but in many ways better. On Demand is expertly designed to house your video blogs and turn into a media powerhouse. Posting videos from other sources such as YouTube, Vimeo, MySpace is as simple as pasting the embed code. The theme supports videos up to 1024 pixels – something YouTube and Hulu don’t even offer.

In addition, the video box expands in height depending on the video source:

Just like Hulu – the homepage contains a large content scroller for your featured videos. Sleek designs for the the post containers, category pickers and subsription links sets it a step above the average video website. Other features include ability to rate videos, fully widgetized sidebar and ability to separate your regular blog to videos.

You can view the live demo here. On Demand starts at $75 single, $150 multi-site and $250 developers.