Cant think of one. The BIG problem with all of these non-canon movies is that they all ignore the power balance that is created in the canon-series. They´re 1,5hours long, so they feel the need to show the audience flashy, "epic" special attacks. The problem is that we usually see attack of such scale only after months of preparation/build-up in the actual anime-series.
For example The Last Mission: The big bad guy is introduced showing a special technique that rivals Netero´s golden buddha-technique. Out of nowhere. It took, what, 130 episodes for us to witness Netero´s overwhelming power in the anime, but the movie shows us an equal power within 5 minutes.
What´s more, as anime-watchers we know that Nen techniques usually aren´t that flashy, only the most powerful techniques have flashy effects. In the movie, EVERY attack fills entire rooms/halls with light effects.
In the anime, we get to know powerful nen-users slowly, one by one, and they´re usually very impressive, despite no flashy effects filling the environment. Remember when we first met the Spider´s Nobunaga? Aloof guy, who suddenly takes a stance and feels like the most scary thing in the world. No light effects, just him calmly staring at Gon/Killua.
This particular movie also has other problems (like introducing On, a new energy parallel to Nen, that conveniently ceases to exist after the big bad guy is defeated), but the above is the main problem most anime movies have in common.