Hulu Plus running on an Xbox 360. The video, which appears to be legitimate, shows off some of the interface as well as video playback. Overall, it's very similar to the interface used by Netflix, including the ability to search for programs and add them to the queue.
We've trimmed the video to protect the identity of our tipster, but the full video also includes an ad on the dashboard stating that Hulu Plus will indeed launch on April 29, as was recently reported. Furthermore, the ad notes it will launch at 9:00 UTC, which corresponds to the usual 2:00am Pacific upload time for Xbox Live content. Find the video after the break.