Now you can watch movies on facebook. Warner Brothers with facebook have made it possible for facebook user to watch online movies but as this is in initial stage only US resident can avail this facility.
If you are living in US and wanna use this facility you just have to pay a nominal amount $3 per movie or 30 facebook credit. After paying this amount you can view movie for 48 hrs.
To use this service you just have to allow an application to use you details and make payment. Currently there are 4 movies available The Dark Knight, Mafia Wars, Inception, Live Nation and more will be added as per user reaction.