Does HDNet (not HDNet Movies) ever play any movies from time to time? It seems as though their content is very limited.

No, they don't; I think that's why there is HDNet Movies.

No but its great for MMA

Yes, they do. HDNet used to set aside a slot on Friday for showing movies, although that's fallen by the wayside. Movies do pop up on their schedule every once in a while (several have aired over the past month or so), but they don't really show films with any marquee value, and it's not guaranteed that they'll show one every week.

I haven't watched HDNet with any regularity in a few years -- none of the content grabs me -- but HDNet Movies is absolutely essential. It might be my favorite channel, period.

they occasionally show IMAX features on HDNet (a couple of them this Wednesday 1/23)