You can find a number of movie genres whenever you watch free movies online. Just log on to any video streaming site and choose from among-the categories to get a list of all movies accessible in a particular genre. Other than comedy, action, adventure, drama movies, and fantasy movies, several of today's popular movie genres include the following.

War Movies. War movies depict courage, humanity and heroism within the midst of strife and adversity. Also they can be filled with drama and make strong political statements. War movies may or may not be heavy on special effects, nevertheless they usually feature spectacular battle scenes that explore the grisly nature of war and its deadly aftermath.

Teen Movies. Quite obviously, these films tackle the different themes that preoccupy today's youth-school, family problems, friendship, teenage romance, growing up and battling one's fears or insecurities. As always, there stereotypes such as the popular girl, the jock, the rebel, the geek, the outcast, the cheerleader as well as the star player, the common girl/ boy, the girl-and-boy-next-door, and also the new girl/boy.

Sci-fi Movies. These films explore the frontiers of our civilization, science and technology. Science fiction movies bring viewers to fantastic places like far-flung planets and parallel dimensions. A great deal of science fiction movies are set in a chaotic and dangerous post-apocalyptic world that is vastly distinctive from the world we are living in. There may be aspects of time and space travel, encounters with extraterrestrial life as well as the struggle for freedom against tyrannical invaders, human and alien.

Mystery Movies. Unsolved crimes and political conspiracies often provide excellent plot points that will leave viewers guessing well after the movie ends. Mystery movies either fall into an open or closed format. An open format reveals the criminal at the beginning of the film as the story is retold, while a closed format is like a standard whodunit detective story which tracks the protagonist's quest for the suspect whose identity will typically revealed in a totally unexpected fashion.

Documentary Movies. They are normally shown in cinemas and movie festivals but are also released in DVD format. You may find a lot of documentaries if you happen to watch free movies on video streaming websites. Documentary films tackle various social and political issues in-depth. Some documentaries follow the lives of certain people to establish a character portrait. While most documentary films depict "real life" and "real people," quite a few fictional narratives are in reality shot in documentary style for a more convincing effect.