To watch free movies and TV shows online without downloading anything, you can check out Los Movies, Movie4k, PrimeWire and some other sites.
The following will show you a different one — Viewster, which is "legal" and will pay for the artists, as what it says.
Sounds like Hulu, right?
On the Viewster site, you can watch thousands of movies and TV shows in drama, action, comedy and many more, and you can also watch many trailers, movie scenes and celebrity news, if you cares.
For every video on the Viewster site, there will be ads (like Hulu, too), and the video quality is quite good, but there is no full screen, though it says there is.
Besides English, Viewster also offers movies and TV shows in Spanish, German and French, some of which will have English subtitles.
By the way, Viewster provides native apps for Android, iOS, WebOS and Bada devices.
Because Viewster is a legal site, you won't find the latest movies or TV shows that are still in the cinemas or on air, which is boring, just like Hulu and all the other "legal" sites.