Ong Bak 3 is also in HD/5.1, since you had 2 on your list. My girlfriend makes me watch Thai movies with her lol.
Several of the TV shows offer HD and 5.1. Psych, In Plain Sight, Grey's Anatomy, Lost, and Heroes just to name a few I've seen. There are quite a few more that are in HD but not 5.1.
It's easy to be critical of it right now, but HD/5.1 has only been offered since the end of 2010, and only on the PS3. The selection of these titles, while not huge, is getting bigger all the time and will only continue to grow.