I just love Rush HD. It's very clear and the shows are very cool. The thing I love most is there is no commercials. Moto PIG is my favorite show on there.
Speaking of Surfing, UHD or HDNET had "Step Into Liquid" on yesterday, and I recorded it. Oh my gosh! Of course it is not a perfect transfer, and there are some of the problems you get transferring film to HD, but it looked amazing. Some incredible surfing shots there. Check it out if there is a repeat.