There are a few, just not very many. I think what WunDaii is trying to say is that a jailbroken iPhone can be configured to play video files that are high definition, even though it'll only be displayed in the iPhone's native resolution.
You dont need a huge screen for HD Thats not the factor with this really. If Ipod had HD and Ipad had it as well, I think I would prefer the Ipad though. HD gets a little silly on a screen that isnt even 4 inches. Its a shame though that the decided not to go with a 1080p/i with this version. Wasting a nice setup. Or just waiting to cash in later with 2nd/3rd generation.