Films generally are longer one-off works, but of course very short films can be amazing too. Not just live actors or factual works either; Animated with computer graphics or with normal artwork also covers a huge amount of works.
On the subject of films; while they can come off as compressed if based on a longer work such as a book (even short stories are usually too long), if an original piece there are some really great original things films do that just make watching them a joy. Comedy is still highly underrated in film criticism though (something I remember being brought up in a film show before the 2010 Oscars) because they almost never win Oscars. How strange!